Discharge Your Lipos Fast! ISDT FD-100

Подписаться 81 тыс.

Просмотров 10 тыс.

50% 1

ISDT FD-100: bit.ly/2HlFEhN
ISDT D2: bit.ly/2Hwkpst
Lipo Killer Discharger: bit.ly/2LMQRfn
ISDT SCLinker: bit.ly/2WMyiZE
Software (click application software): bit.ly/2JGCZkc
AOKoda CellMeter 8: bit.ly/2w0dl1J
Lipo: bit.ly/2KjKEa5
My Gear
Taranis: bit.ly/2ReLpUN
XM+ (look up rssi on channel 8) bit.ly/2H3NApB
RXSR: bit.ly/2CVjyAv
R9M: bit.ly/2GZM7AH
R9 MM Receiver bit.ly/2UeZ4vS
Crossfire: bit.ly/2ODAXkm
Jumper T12 Plus: bit.ly/2LYSd35
Flysky I6X: bit.ly/2QxancO
Fatshark HD3 Core: bit.ly/2Gx5IqN
Diopters: bit.ly/2HV1eKA
Fatshark HDO: bit.ly/2CXaGdi
Aomway Commander: bit.ly/2Flg8bT
EV800D: bit.ly/2LXBq0m
FXT Viper for glasses: bit.ly/2shEpI1
True D Diversity: bit.ly/2LVEcTS
Aomway Cloverleaf: bit.ly/2Qr05Lr
Menace Pico: bit.ly/2sNGP1p bit.ly/2Okh6Xz
Menace Bandicoot: bit.ly/2S81nzD bit.ly/2NGW3RH
5" Props: bit.ly/2Rjy8KH
Charger: bit.ly/2LWKwKR
Best Cameras:
Micro Swift: bit.ly/2QwNhDl
Micro Sparrow :bit.ly/2FeSSx0
Best VTX:
IRC Tramp: bit.ly/2FiIROv
Best 30x30 stack: bit.ly/2FdilH4
Best 20x20 Stack for 5 inch: bit.ly/2SNzD0F
Best 20/20 stack for micros: bit.ly/2FfpJRo
Best 6 Inch rtf
Diatone 2018 GT-Tyrants 630: bit.ly/2Fiboni
Best 7 Inch rtf
bit.ly/2RhigZk
Best BNF 5 racers inch (in order):
BATMAN220 (103MPH): bit.ly/2CVNcWf
Emax Hawk 5 (106MPH):bit.ly/2GYqAs9
Hobbymate Meteor (106mph): bit.ly/2Umzxy9
Hobbymate Comet (103mph): bit.ly/2NH0eJk
HGLRC Mefisto 5-6S: (103MPH) bit.ly/2HBUbIi
Kopis 2 SE (101 MPH): bit.ly/2xOuR9E
Diatone 2018 GT R530 (97mph) : bit.ly/2RAShLz
KK 5GTL https (96MPH) bit.ly/2C7XAZc
Best 5 Inch Freestyle RTF:
Skystars Star-Lord bit.ly/2QymKFP
Best gopro mounts Brain3d:
bit.ly/2CW6qeo
Best Ultralight endurance RTF (in order)
Diatone GT-M515 (106mph) bit.ly/2Qv3fhl
LDARC 200GT (101mph) bit.ly/2H3QsTp
Best 3 Inch racers (sub 250 Gram) (in order)
Skyzone S140 (112mah) bit.ly/2Nk1IZJ
Diatone GT-M3 (107mph) bit.ly/2CTOpx2
Diatone Gt-R349 (104 MPH) bit.ly/2Jtuz1g
HGLRC XJB-145 (99MPH) :bit.ly/2FdG8GH
Eachine TS130 (108mph): bit.ly/2RAKBZN
Best Sub 250G Cine Freestyle Copter:
Geprc GEP-CX Cygnet bit.ly/2RN0fl5
Best 2.5 Inch:
Diatone GT-M2.5 bit.ly/2Qv4oFF
Babyhawk R Pro bit.ly/2C9COsb
Best 2 Inch:
Babyhawk R: bit.ly/2H1f7YG
Best Tiny Whoop for indoors
UK65 bit.ly/2RuWMYj
Battery: bit.ly/2SNBeDH
Tiny Hawk: bit.ly/2uuQAlR
Outdoors Or larger Areas:
Mobula7: bit.ly/2LZ82Xm
Best Cine Whoop
Mobula7 HD bit.ly/2HGaeoq
Lipo Killers:
bit.ly/2RH1yBM
bit.ly/2AwzHuo
Batteries For 5 inch
3S Light (short flight times): 1300mah GNB bit.ly/2CF2xtN
3S Heavy (long flight times) 2200mah GNB bit.ly/2YqWdPG
4s 1500mah GNB bit.ly/2uVMFij bit.ly/2uVHoHj bit.ly/2KjKEa5
6S 1100mah GNB bit.ly/2VzRGbJ
6S 1250mah GNB: bit.ly/2FyHJof
Batteries 3 Inch close to 250G:
3s 850Mah Tattu bit.ly/2HUPffX
3S 750Mah GNB bit.ly/2JJSCsS
4s 850mah bit.ly/2AAvAgS
4s 750mah bit.ly/2AEb3bl
6S 550mah bit.ly/2Z1g5sU bit.ly/2P0O54b
3 Inch Sub 250G Batteries
3S 650Mah GNB bit.ly/2FDLTMS
3S 550Mah GNB bit.ly/2OseffW
4S 550mah GNB bit.ly/2V2bOTg
4s 650mah bit.ly/2Rg8uGB
4s 750mah bit.ly/2AEb3bl
2.5 Inch Batteries
3S 650Mah GNB bit.ly/2FDLTMS
3S 550Mah GNB bit.ly/2OseffW
4S 550mah GNB bit.ly/2V2bOTg
2 inch Batteries:
3S 650Mah GNB bit.ly/2FDLTMS
3S 550Mah GNB bit.ly/2OseffW
3s 350mah (short flight time) GNB bit.ly/2UbPMkl
4s 450Mah (short Flight time) Tattu bit.ly/2TCVOGf
Cinewhoop Batteries:
4s 450mah Tattu bit.ly/2TCVOGf
3S 550mah GNB bit.ly/2FD7VOO
3S 520Mah GNB bit.ly/2OstW6N
3S 450mah Tattu bit.ly/2V0h1eC
3S 300mah GNB bit.ly/2WlS6m6
2S 450mah Tattu bit.ly/2usOYsV
2s 450MAH GNB bit.ly/2V8y91I
2S 350mah GNB bit.ly/2uEA9Uh
2s 300mah HM bit.ly/2BgwShg
1s
Tiny Hawk:
GNB 550mah bit.ly/2UoUHPI
GNB 450mah bit.ly/2G5gmCD
EMAX 450mah bit.ly/2TXW0oF
Best Cheap Aerial Photography Drones
Fimi X8 SE bit.ly/2CiQaDu
Mi 4k bit.ly/2U6Gfb6
Fimi A3 bit.ly/2GDBgv9
Hubsan Zino bit.ly/2Ta9xIy
DJI Copters:
Mavic Air: bit.ly/2ALlcDw
Mavic Pro: bit.ly/2SIuGq7
P4 : bit.ly/2CZ5OVz
P4 Pro: bit.ly/2PyBWpV
Spark: bit.ly/2QfM5on
Mavic 2 Zoom: bit.ly/2QhAIfP
Patreon:
/ andyrcchannel
ARC MUSIC bit.ly/2Wr7gXe

Опубликовано:

7 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 79

@AndyRCchannel 5 лет назад

@dronereviewman9580 5 лет назад

I LOVE DRONES!!! 👍😀👍

@allanjayceon7342 3 года назад

Dunno if anyone gives a shit but if you're stoned like me during the covid times you can watch pretty much all the new series on instaflixxer. Have been watching with my brother for the last couple of weeks =)

@reidharper6277 3 года назад

@Allan Jayceon definitely, have been using Instaflixxer for months myself :)

@billsomrak 5 лет назад

I have 2 or 3 ISDT products, and have been very pleased with them. This discharger seems good as well, although, I think the LED indicators could be brighter. I think it would be nice to have a balance plug input as well, but your comments on that are valid. This would be a better option than my "kluge discharger", which is made up of some 200W power resistors and jumper wires. Thanks for the look. Cheers!

@berberdodo 5 лет назад

Amazing device i use it daily! living in Colorado the weather can change very quickly winter and spring ...so some days going out to fly things change and i can go home early discharge my batts and saves the life of them and longevity ....highly recommend it...

@Retset 5 лет назад

I've had one of these for a few weeks and am very pleased with it. Each lipo goes to 3.80V/cell which rises to 3.84v/cell after disconnection. By happy fluke, my iChargers charge up to 3.84V/cell for storage so I end up with a load of lipos that I can parallel charge later. Only complaint is the noise so I tend to put it outside till I hear it beep to say it's finished.

@Autocharge1 5 лет назад

So true about flying with friends however no matter how I try there seams there is not any flyers local to me, most are 45-1:30min away. I have had one of these ISDT FD-100 for a good year now and find this is very useful. I carry 16> batterys and sometimes need to discharge due to not using one or two batterys or a damaged Quad that wont fly. I normally keep the full batterys one of two days bit if the weather is against you then having full batterys for longer could upset the batterys chemistry. The ISDT FD-100 is efficient at discharging but the fan dose kick up a noise as it cools the internals. It wont balance the cells but if you balance charge your batterys your cells should be balanced already. One of flyers I know has one of these as he uses a large Lipo to charge other lipos when flying, after he uses this to discharge the big lipo to store. This is well worth having in your bag

@frasersteen 5 лет назад

It is a bit expensive but I got mine on special. Absolutely mandatory if you are travelling so you can get your packs prepped for travel at the end of your trip. Also I have charged packs from yesterday. Thanks for reminding me.

@Gosuminer 5 лет назад

AOC Cellmeter 8 with 150W halogen bulbs is second to none. Cheap, fast and quiet discharge and you get a decent lipo and servo checker on top. I do have the iSDT FD-100 and the only time I use it is when... well never, frankly.

@AndyRCchannel 5 лет назад

second to non.. till the bulb blows or burns a hole in something. just my opinion

@Gosuminer 5 лет назад

@@AndyRCchannel Yes, you do need to put the bulbs in a safe place while discharging. I usually plug in a parallel board, put the lipos on a table outside and let the bulbs dangle over the edge. I have discharged around 100 lipos so far and if a bulb should blow they are dirt cheap to replace. I agree the iSDT discharger is safer but the noise it makes doesn't make my wife happy.

@AndyRCchannel 5 лет назад

@@Gosuminer yeah they are pretty loud. What ever works for you dude. I have the other one on order so ill see how they suit me. cheers for the feedback

@jackdaniels7913 5 лет назад

I love mine and don't know how I did it before I use it in conjunction with my JB parallel board to bring down my packs and its worked out grate so far I also picked up the isdt cell checker and it's a God send on its own! I also bit the bullet and ordered the isdt t8 with a 24v power supply as a bundle package from heli-nation as a plug and play for the bench and that thing is a beast! Absulty recomend the isdt brand they have met and in most cases surpassed all my expectations! Thanks for the review and I hope to see many more from the isdt family... 🥃Cheers🍻

@dagobertosalazar 2 года назад

The specs of the FD-100 say that the max power is 80 Watts. If you have a 4 cell battery (16.8 V), then the maximum current it can draw is 80/16.8 = 4.8 A. At over 5 A the device is indeed overperforming.

@MxJavice 5 лет назад

Just to clarify on the higher end chargers that advertise they can discharge at 30+ amps. They can....but not without building a an external load setup which takes a lot of space and more money. My icharger 306b will discharge at 80w or around 3.6 amps internally with no extra things needed.

@gryfandjane 3 года назад

Hi! I just bought one of those dischargers today. Thanks for the tips!

@Raptor50aus 5 лет назад

I use a Hyperion Duo 3 Store charges very quick Excellent charger !!

@cms108 5 лет назад

This discharger is rated at about 80W, which is why it can only discharge a fully charged 4S pack at about 4.8A (80/16.8). That's also why, as the battery voltage drops to about 15.2 volts near the end of the discharge process, the current increases to about 5.3A (80/15.2). If you were to discharge a 2 or 3 cell pack, you'd get the full 6 amps out of it. If you plugged an 8S pack into it, you'd only get about 2 amps discharge current out of it.

@AndyRCchannel 5 лет назад

Thanks for the input Chris but that's not the case. It did the same with 3s It's actually down to the capacity. I discharged a 10a lipo on it and it did eventually get to 6a it's because the power ramps up the lipo has reached storage voltage before it can reach 6a but I can confirm it can get to 6a. Cheers

@cms108 5 лет назад

@@AndyRCchannel I'd be very surprised if this is the case, ISDT's own product description and specifications describe this as an 80W discharger. To discharge a 4S pack at 6A would require the charger to be able to dissipate at least 90W, even for a pack that's already nearing storage charge. The capacity should make no difference, if you get a 2Ah 3S pack or a 100Ah 3S pack, it'll be able to discharge either of those at 6A. If you discharge even a small 1Ah or a large 10Ah 4S, the most you should ever get is about 5.3A. If you get more than that, then either ISDT is deliberately under selling their product, or yours is broken - and a fire hazard. I'm assuming the 10Ah pack you tried was a 3S, I'd encourage you to try again with the largest capacity 4S you can find... maybe plug 6 1300mAh packs into a balance board to make a 7.8Ah battery. Similarly, if you do the same thing with 6S packs, you shouldn't ever get more than 3.5A.

@AndyRCchannel 5 лет назад

You should know by now that the specs are never correctly listed or rated with these products :-) no the 10a is a 4s for field charging. Either way it's a super product. Charged 15 lipos yesterday but only got to fly one pack. All storage charged within a couple of hours

@cms108 5 лет назад

@@AndyRCchannel That is quite surprising, although as you say the specs aren't always 100% accurate on these kind of things - and at 4S you're not exceeding the 80W limit by that much to get to 6 amps. It'd be interesting to see what it eventually maxes out at on higher voltage 5 and 6s packs if you ever get chance to test it. As you say, it's useful either way, discharging that many packs on my charger would take me all day.

@poolec404 5 лет назад

I just use the charged packs on a parallel board to bring discharged packs up to storage. Configure your low volt cut-off before hand.

@AndyRCchannel 5 лет назад

what if you have no discharged packs?

@sklepa 5 лет назад

As far as I can tell, leaving lipos fully charged for couple days would not damege them as much as community use to say. Im really into different chemistries of batteries, i have tried used, powered charged discharged and measured different batteries for different purposes and devices believe me or not. Id rather say to discharge lipos for safety concerns, as You said, this is quite bit energy acumulated in these, and one does not want to free that energy indoors :) Of course i do agree that lipos that are fully charged degrades overtime but not as much as thay say. Research says that in numbers is like 1-2% capacity loss in storage charge and room temp in 1 year, and up to 4% fully charged in room temp(1 year also). Temperature is very high factor when it comes to bateries degrading. Cheers!

@sklepa 5 лет назад

More to say, you would keep good performance for longer discharging lipof for example to 3,65V and charging to 4,15, rather than remembering to discharge them if they are fully charged. Batteries charged lets say 30-80% capacity mark wold have 2000-4000 cycles instead of like 300 using full capacity, satellites batteries works that way for example. here is a lot of interesting info: batteryuniversity.com/

@robertp7209 5 лет назад

Thought I read somewhere for fully charged lipo to be no more than one week. I had a pair of hard-case 5000 mahr 2s 2p batts for my monster truck left them unknowingly fully charged for more than month. Both were swollen big time. You can rock them back and forth on a flat surface.

@sklepa 5 лет назад

@@robertp7209 Batteries usually get swollen because they were overdischarged, and during next charge they tend to make gases. I got a couple dozens of usual tablet lipo batteries and they are laying in different storage voltages, and as far as they dont cross certain voltages there is no visible or measurable harm to them over the time(I got them for about 5 years - still usable). As far as i know, (making it simple) the main difference between common lipos used in cellphones or other electronics, and high discharge drone lipos, is thickness of the copper layers, note that high discharge, and same capacity batteries are heavier than lower C ones.

@ktmjay9920 5 лет назад

Thanks brother 👍. Have not seen it. I agree about flying with others.. Good times.

@xxxenricop 5 лет назад

Had that since it came out. Use is great but it still takes 15 min to discharge a 4s and if you have a bunch is a pain in the neck. Just seen another product that will discharge one at the time via a small lightbulb (5us I think) this would be a plug and forget though. You can snap one on on the fully charged lipo and by the next day they're at storage charge. While the initial outlay will be larger I think I'll be more likely to consistently discharge batteries rather than having them charged for a week at the time....here is the product! www.unmannedtechshop.co.uk/product/lipo-suction-battery-discharger-xt30-xt60/?attribute_pa_size=6s-xt60&gclid=CjwKCAjwlPTmBRBoEiwAHqpvhdkqLdEzd9CYSoQ7W3QD55eUF2shcPTsADCbzaDyuFQrNhK7n6mpkxoC7q4QAvD_BwE

@AndyRCchannel 5 лет назад

did it in 11 here. the one you have linked to is the same method as the lipo discharger and would take hours but if it suits your need fair play but open electronics and heat and needing around 50 of them the isdt suits be better

@RgreatT 5 лет назад

Great review and great product. I actually just bought one 2 weeks ago. I love it!

@patrickcolclough2423 5 лет назад

Fine video Andy. Good to meet you at Popham too.

@AndyRCchannel 5 лет назад

you too Patrick thanks for chatting

@James28R 5 лет назад

Love the C ratings on your lipos, better fiction than Tolkien!

@AndyRCchannel 5 лет назад

the ones on yours are correct are they?

@kirkglundal4289 4 года назад

Have you tried adjusting the minimum voltage setting with your D2 charger? ISDT shows a smart charger connected to the fd100 with their data cable.

@didactylos4diddy474 5 лет назад

"A little bit chatty......" Really Andy?. Never would have guessed that you'd be the same off-line as you are on-line 😃 Nice bit of kit for those who need it

@SuperSilvi1990 5 лет назад

I gave up on discharging batteries. My isdt charger just freaks out and says its getting too hot and never discharges. Usually I just plug it in to my quad and just fly around in the backyard until it's at 3.8 per cell. Takes literally a min per battery.

@AndyRCchannel 5 лет назад

if you fly alone its easier to do that

@techvirus9541 5 лет назад

Andy RC What is your favorite brushed quadcopter ???

@AndyRCchannel 5 лет назад

it use to be the eachine qx90C oro but the fets died very quickly so id have to go with pure value and say the eachine E013 as its the cheapest way people can get a full fpv kit so id go for that. But really brushless now has taken over.

@AndyRCchannel 5 лет назад

@licensetodrive it was the hubsan H107D ;)

@awdhootkanawade 5 лет назад

I use 12 volt car bulb to discharge with multimeter to check😖😥

@AndyRCchannel 5 лет назад

how much are the bubs when they blow?

@Andre_M_3D 5 лет назад

I picked up the ISDT FD-100, the ISDT BattGo BG-8S and a Q6 plus a while back. I really do like them and the discharger is such a time saver. I have like 40 batteries and some are 6000mah so the FD-100 is amazing and will discharge them quickly. Nice review sir

@dronereviewman9580 5 лет назад

I like 2 discharge my batterys by flying! Hahaha!!! But this would be nice 2 have for the times i charge up and its a week of rain and i can't fly!!!!!! Man i love this hobby! GREAT CHANNEL! 👍😀👍

@samuelpuhretmayr5036 3 года назад

it is eighter 6A or 80Wh wich ever comes first and it is acually pulling more than 80Wh what is amzing because it is acually over performing

@georgeschichtle8667 5 лет назад

i don't have many batteries, i only have 6 1s lipos for my t inyhawk and i usually run through all 6 and then i have to call it a day .. can't wait until i can get larger batteries and models, i started out with the emax tinyhawk ready to fly version, so the only transmitter i have is the one that comes with that, i need to find a good affordable transmitter and receivers , any recommendations would be cool, i've watched many videos but so confusing sometimes, just need a good transmitter with the bay on back for TBS Crossfire so i can go long range (really just want over a mile) .. anywho .. great video , might need one of these one day.

@taha12012 5 лет назад

Go for frsky qx7 plus and it supports crossfire but the frsky r9m is a cheaper option with basically the same long range and is fully supported with the frsky qx7 plus

@wadetubman 5 лет назад

I picked up one of these based on your recommendation. A great product and very handy. Do you think it would be possible to connect 2 4S batteries in series to discharge them at a 8s.

@AndyRCchannel 5 лет назад

Sure as long as it's no more than 8s

@wadetubman 5 лет назад

Cool. I guess its no different to how an x-class will series 2 x 6s to create a 12S for “discharge” in the air :-)

@justfpv1432 4 года назад

Hi, if you're still reading this, it's safer to discharge in parallel,

@amen_ra6926 5 лет назад

Lipo makers need to come up with a better chemistry. Constantly charging and storage charging (if you don't get to fly) is such a hassle.

@22934760 4 года назад

What if I want to discharge completely to dispose of

@DoRC 5 лет назад

I did a teardown of this as well as some testing on my channel. I think it's a good product...... Sooo loud though....

@t5jerry 5 лет назад

I know you don't normally answer questions, BUT, do you think the galaxy tab S2 would be a good tablet to use in conjunction with the parrot anafi, or if not, could you recommend 1 please ???

@AndyRCchannel 5 лет назад

I think the anafi will only hold a phone if I recall. you would have to but an adapter for a tablet. cheers

@t5jerry 5 лет назад

@@AndyRCchannel so if I bought an adapter, would that tablet be adequate ???

@AndyRCchannel 5 лет назад

@@t5jerry its hard to say. these apps are pretty demanding these days and thats an old tablet. I would email parot and see what they say. Dont own anything samsung myself the ones iv had in the past were not as good as the google and sony stuff

@Darelica13 5 лет назад

Cellmate 8 cost a lot lower like 20$ and it discharges much faster

@AndyRCchannel 5 лет назад

it is cheaper but doesnt do it faster. explained at 10:53 unless you stop it when it gets to the balancing part. also the bulbs get very hot and with no cooling. you are gonna have to keep an eye on it. the bulbs also cant be touched by hand and they will need to be replaced. I do have one on order despite all of that but i think the ISDT is a safer option. Thanks for commenting. cheers

@Darelica13 5 лет назад

@@AndyRCchanneli think it wont go higher because it reached the 80watts

@AndyRCchannel 5 лет назад

@@Darelica13 there are already videos online showing that the isdt discharges faster. go check em out. cheers

@choppergirl 4 года назад

I can't get mine to work. I plug in my battery, set it on the cell count and discharge rate, and all it does is turn on the green light and go BEEP BEEP BEEP BEEP. After a while the green light goes out. Watching a voltage meter connected to balance leads, nothing is changing. I'm at 3.89 volts, and I need to discharge to 3.75. The green light goes out and it stops beeping. WTF. Brand new, but useless. Into the trash... :-/ Why did I buy this. Total waste of money, don't buy it. Had to read the directions with a magnifying glass and they said nothing different.

@panthai272 5 лет назад

I put the two Kabel together.., it s mutch faster! (;

@ZylonFPV 5 лет назад

That GN3 battery of yours is rated as 130C/260C - that’s totally ridiculous. That’s 390A burst and 195C constant. No way it could deliver anything like that. Even 60A constant is unrealistic. Battery ratings are so dumb 🤦‍♂️

@ZylonFPV 5 лет назад

Ive thought many times about buying one of those ISDT dischargers - I’m often put off flying because I know once all my quads are broken I’ll have several batteries to discharge which is not possible on my ISDT Q6

@AndyRCchannel 5 лет назад

@@ZylonFPV stay tuned is all I will say to that :)

@ZylonFPV 5 лет назад

@@AndyRCchannel :)

@Haeaeaeaeae 5 лет назад

Never discharge a 3S!!! - I have 4 of these Dischargers and 3 died by discharging a 3S.... So don't buy it on Bangood, you won't get a new one on warranty!

@AndyRCchannel 5 лет назад

Discharging 3s fine here. You sure it's not the lipo brand?

@jinronghappyrcpalace1018 5 лет назад

i just charge my phones or power bank with it...

@peterzingler6221 5 лет назад

And then a 60w 12v bulb does the same in shorter time... Add a snubber network and an Relais if you want an auto cutoff... Yes im a cheapskate :D

@AndyRCchannel 5 лет назад

a bulb may sound cheaper.. till it burns out then you have to buy another and another...

@peterzingler6221 5 лет назад

@@AndyRCchannel actually if you use a cheap as shit car headlight bulb that's fine up to 5s, I have one and a buddy of mine too it works without a problem

@choppergirl 3 года назад

This is the most worthless piece of FPV garbage I have ever bought. Quite simply, mine doesn't do what it's suppose to do. You plug it into the lipo batteries you want to discharge, set the cell count (4s / 6s in my case), and it either beeps with a green light for 10 times and shuts down and does nothing, or it displays a red light if you get the cell count wrong and does nothing and shuts down. It's a total piece of crap. If I were anywhere near the ISDT headquarters, I'd throw this worhtless brick through their window. It has never worked ever for me from day 1. Avoid. This is one where Bardwell got it completely wrong.