12V - 24V Pulse Repair Battery Charger (up to 8A) Unboxing & Test 

why 9 did the other eight burned out hahahahah

Can you use it without connecting from the source???

how was it?

​@@Andrew-rv5qt Good.

Same

This is all I've found so far written in an advert for the product Use Description: Once the positive and negative are connected, the LCD screen will light up. The battery voltage and temperature will be displayed cyclically. If the positive and negative poles are connected incorrectly, the device will flash "reverse connection" and display EI-I- Once the battery has been connected correctly and then the power supply, the charger will start to charge automatically. The screen will cycle display of the battery voltage, current, and ambient temperature. Then choose the charging mode that matches the battery that has been connected (See mode selection on instructions for details). After the charging is complete, the battery power bar on the screen will show as full (100%). It is recommended to continue trickle charging for about 1-2 hours. At this time, it is in floating charging state until the screen is turned OFF and the charging is completed. After charging is complete, remove the AC plug first, then remove the positive and negative clips. Specification: Brand: RJTianye Size: 147x79x62mm Color: red Material: ABS Output cable length: 65cm Input cable length: 90cm Output voltage: DC13.8-15.5V Input voltage: AC110-220V (50-60Hz) Output current: DC-6A (MAX) Scope of application: 12V for 4Ah-100Ah Lead-acid battery only Mode selection: Mode selection is only available when the battery and AC is connected to the device. Each time the mode button is pressed, it switches in the following order "Automobile-Start-Stop-motorcycle-repair" The car icon is suitable for ordinary cars, agricultural vehicles, trucks and various 12V Lead-acid batteries. (Range: 12V between 15Ah - 100Ah). The battery icon is suitable for a car battery with start and stop functionality. (Range 10Ah - 100Ah). The motorbike icon is suitable for all kinds of motorcycles and all kinds of 12V lead-acid batteries. (Range: 12V between 2Ah - 20Ah). The repair mode (Shield with a plus) icon is for use on batteries that have been idle for a long time, old and unable to charge. See Repair function in the instructions for details. Advert is at this link: qtstock.com/products/12v-intelligent-pulse-repair-charger-rjtianye

Есть аналогичные обзоры на русском. С пояснением потрежимам работе.+ На Хабре статья о работе устройства

No problem, I am glad to help you.. No.. This kind of battery will not be able to repair..

I believe this charger would be suitable by using the integrated repair mode. This mode is ueed to remove the sulphation on the lead plates which acts as a barrier to the production of electricity. These chargers are cheap so you have nothing much to lose

Yeah it's supposed to repair but mine will not go into repair OR charge mode. Garbage.

@@dennymarshall1088 mine arrived today , it switched on and ran through some screen menus automatically then started to charge a 12volt 10ah motorbike battery . Less than a minute later it said OFF. Unclipped the leads , switched off at the mains 240v socket and gave it five minutes in case for some reason it needed to reset something being “intelligent “. That’s it . Powers up but says “OFF”. Absolutely rubbish quality control when so many other reviews are positive. It’s not the £27 … it’s the day waiting in for delivery, to have to immediately start again , disgusted .

@@dennymarshall1088 Charger will not charge if the battery voltage is too low. Give the battery cable first, then connect to charger

it automatically turns it self off. will show OFF even tho it’s still connected.

I believe it's around an 18 hour process.

Correct Henry ,18 hours just bought one , brilliant Think this is the best model

it's efficiency is up to 85% but not all batteries can be saved but I'd say yes it probably would bring them back maybe after a few tries.

If it stops when it's full, will it auto start when the voltage drops after load is connected? I want to use as UPS?

​@@SwenserI would like to know this also. It seems every video mentions and demonstrates the different amp outputs in relation to battery voltage and that it cuts off but none demonstrate if it kicks back in when the voltage eventually drops

Well I’m guessing it will say full till the volts drop, which it will then start charging and repeating till disconnected.

Well I wouldn't do that if I were you. There is a big risk of fire and they are a deadly mix. Don't let it charge if you are not around, simply plug it every few days when you are around

This is the response I'm looking for!

Instructions say leave on for one hour after it says full

Hi, no I do not recommend to live the charger connected. For this purpose, there are other devices specifically to maintain the battery.

​@@als-techreviewWhy specifically?

Not recommend to charge over 24h just disconnect after 24h once in a while repeat the process

Yes.. that's normal

No.. this is only a charger.. not a jump starter.

Mine are connected to the battery right now charging

Same

Same here

Stops blinking or flashing when done. May take Up to 24hr, if not longer.. In repair mode it will do that for some reason, keep it in repair mode till it shuts off, then switch back to regular charge and it should read full 100% 13.8-14v. Flash headlights to bring it down, Done.. Then check battery in 2 to 3 days with unit unplugged. It should read 12.6-12.4v.. if it dropped lower, time for new battery. In my case, she sits in the garage for days and always drops in voltage. 12.1 and my vehicle won't start. Hope this helps.

Same as mine, mine was completely drained, this device told my battery was faulty and didn’t charge, i took my drain battery next to my other car with good battery and gave it a jump start with direct cables, after 5 min of direct connection with the car this device finally detected the drain battery and started charging it, but it never gives the exact battery %, it just keeps flashing on 80%, i took it off after 10h of charging and keep it for an extra hour after it’s saying FULL The battery was a varta d21 12v 61ah 600a

same .. why batt level is not moving it 12hrs charging already

Me too blinking empty battery after 8 hour charge brand new got it today

no you cant recharge a dead battery first just put on repair mode over night

I will recomend disconnect battery from the car first and then try pulse mode.

ninguno...

For me it maintained a FLT voltage of 13V post charging. This is really nice and comes handy. Am not sure of the repair mode, as to how long does it take to complete the repair. Mine is a 100ah battery

Yeah same here. It won't go into repair mode either

Same here, what are we doing wrong?

Think you're meant to always fully charge a battery before using repair mode, did you do that?

@LOUi TUBE gave up lol sure it would of worked but my battery seems very decent anyway.

gave up lol sure it would of worked but my battery seems very decent anyway.

Yes , it can take 24 - 48 hours on repair mode . Just leave it on . My leisure battery took about 30 hours .

I got worried after a few hours of repair mode my battery got quite warm unlike ever before and was bubbling & hissing inside but it's sealed up with no caps so I turned it off for the night. . . starting to think I'm an idiot now 😂

I just connect mine to the battery. I lost my manual lol

Battery terminals only

@@strtkempo ok thanks gonna try it that but I wish the manual would have told me that first.

@@alylisabhow did you get on? I’m sure the manual states (I it’s own words) that of the battery is the type that is earthed from the negative terminal already (you should see a little cable attached to part of the negative terminal from the car, attached to an earthing point on the car. It means you don’t need to do that chassis thing. I realised most people simply use the terminals. Never heard of anyone getting blown up yet.

it is charged to 100% but but showing

Yea hard to tell by the % A good indicator can be the Charging A, if it’s charging at around 6A then the battery is drained, if it’s charging at low A like at 1A then its probably full or near full

Does yours auto change to the correct voltage straight away? Mine seems to stay on 24v for ages and I have to hit the mode button for about a minute before it will randomly change.

your battery is dead

yes this one does.. you can repair the batteries even under 10V.. done on many of them.. 👍

@@als-techreview Thanks!

his battery had a black wire on positive and blue on negative which is random but he will have known that given he's experienced he probably just looks for the + & - without guess.

you mean as jump starter, maybe not, because the use cases are just charging but it does provide in-car charging so maybe after 4 to 8 hours it charges battery to a good start level

It has to be plugged in

You need to connect to a socket to charge the battery, not useful on the road only at home.

8 amps on 12v the 4 amps is at 24v

That probably means you have a dead cell in the battery. What the charger 'see's' is full cells. Even if one of them is dead. It's worth trying a pulse charge on the battery to see if you can recover it. The charger will show 'Pul' on the display until it thinks it has recovered the battery. When it thinks it has, it will show 'Ful' on the display. You can then test the battery for lead acid it should show around 12.6 volts after standing for a while. If it has a dead cell it'll show around 10.2 volts again after standing for a while. If that's the case, the charger hasn't managed to recover the battery and it's time to recycle. I recently recovered a Caravan lead acid battery with this charger from 8.2 volts to 12.6 after the caravan charger failed. It's still good 5 weeks later. They do work very well if the battery is recoverable this charger will do it.

@@davejybanditwhat happens when the battery on the right keeps flashing when connected to a battery.

You can leave it connected.. But I don't reccomend to start the car with connected battery charger or use any electrical consumer in the car while charging.

I directly charge my car overnight without remove the battery...it works great

in my project car that is getting a heart transplant I have 2 subs 2 amps 2 low mid drivers & 2 mid hi drivers and to keep it running at mid to hi volume I'd have 2 batteries in parallel hooked up to 2 basic 12v chargers... goes hard as hell btw... anyway I guess you can do that because the basic chargers have diodes which prevents back feed of current so anything drawing current after that takes it but also if I was to run the engine it would be fine as the batteries would only draw so much and the wall chargers would ease the alternators job and vice versa. Im guessing smart chargers would try overcharge or not charge at all due to voltage spikes, interference from alternator or jumps in current but I'm not certain on that part because I don't want to fry anything yet 😅

@@retarayben2073 you just hooked the clamps on and it started charging ?

@@mickeymouse1191 yes. You select the mode and then clamp it on the right terminals. It then starts charging.

24 hours then it automatically switches to regular charge mode. Once full it's essentially in maintainer mode.

I just bought one of these kind here written leave battery for 16 hours repair mode it’s cool I hope it repair my car battery because it have problem now it’s in repair mode.

@@softtalktv4535 did you open the caps on your battery while it was in repair mode?

Hi, thanks for the question. There is no other bottons.. The only touch botton is the mode selector..

Does this mean it’s faulty?

Links no longer allowed on you tube

Did you ever find a site with manual?

This is all I've found so far written in an advert for the product Use Description: Once the positive and negative are connected, the LCD screen will light up. The battery voltage and temperature will be displayed cyclically. If the positive and negative poles are connected incorrectly, the device will flash "reverse connection" and display EI-I- Once the battery has been connected correctly and then the power supply, the charger will start to charge automatically. The screen will cycle display of the battery voltage, current, and ambient temperature. Then choose the charging mode that matches the battery that has been connected (See mode selection on instructions for details). After the charging is complete, the battery power bar on the screen will show as full (100%). It is recommended to continue trickle charging for about 1-2 hours. At this time, it is in floating charging state until the screen is turned OFF and the charging is completed. After charging is complete, remove the AC plug first, then remove the positive and negative clips. Specification: Brand: RJTianye Size: 147x79x62mm Color: red Material: ABS Output cable length: 65cm Input cable length: 90cm Output voltage: DC13.8-15.5V Input voltage: AC110-220V (50-60Hz) Output current: DC-6A (MAX) Scope of application: 12V for 4Ah-100Ah Lead-acid battery only Mode selection: Mode selection is only available when the battery and AC is connected to the device. Each time the mode button is pressed, it switches in the following order "Automobile-Start-Stop-motorcycle-repair" The car icon is suitable for ordinary cars, agricultural vehicles, trucks and various 12V Lead-acid batteries. (Range: 12V between 15Ah - 100Ah). The battery icon is suitable for a car battery with start and stop functionality. (Range 10Ah - 100Ah). The motorbike icon is suitable for all kinds of motorcycles and all kinds of 12V lead-acid batteries. (Range: 12V between 2Ah - 20Ah). The repair mode (Shield with a plus) icon is for use on batteries that have been idle for a long time, old and unable to charge. See Repair function in the instructions for details. Advert is at this link: qtstock.com/products/12v-intelligent-pulse-repair-charger-rjtianye

no.. I always power off when the charging is finished or when is not charging..

I try to charge many types od batteries and on all works just fine! No complains at all.

I was trying to decide between a name brand like Noco or Schumacher, but I’ve just bought this for half the price from Amazon after reading so many positive reviews. We’ll see!

No it sucks

Your battery hass too low power to be charged with a smart charger... connect it to a running car for 20 minutes, then remove and charge.

Yeah. It's a piece of crap that doesn't work and I'm pretty sure this dude hooked up the charger to a dead battery and it did the same to his as it did to yours

If it says off it means voltage is too low. Just leave it on the battery while it says off & eventually it will change

If you can fully charge the battery, why would you need to repair it?

i have a battery that loses charge very quick I too wondered if I should repair from flat or holding as much charge as it could first... I don't think it matters to the charger though, it will analyze it.

Once it reads full it basically turns to maintainer mode.

You'll burn the unit up having it constantly hooked up. These aren't that hardy.

For all my battery backups, I top them off once a month or so. I try to discharge them every 6 months and recharge them.

@@strtkempois it normal for the machine to take a while to detect wether it’s hooked up to a 12v or 24v battery. Mine always starts on 24v but I have to cycle through the 4 modes for about a minute before it detects and changes to 12v!

@@LegionIO If you're feeling adventurous and like electronics look at the buck converters. XL4016. They are adjustable in amperage and voltage. You need some knowledge about batteries and electric components but they're easy to use. You can deeper and much more slowly charge batteries. Usually adjustable between 4v-40v amperage can be adjusted 0.1-8A. It's a pretty neat little circuit.

Most of these are rated for only 12v. Temu sells the same thing as this rated for 12v and 24v

This chargers cannot be used for lithium.

are you stupid ? once the device is connected to the dead battery it will turn on IF IT IS CHARGED SO CHARGE IT BEFORE YOU PUT IT IN YOUR CAR

Yes that one of the reasons I bought mine.

Lithium battery

It stands for "pulse charging"

It will auto detect the voltage.. no need to do anything.

Hi, is it really a power bank jumper to turn the car on? I'm thinking of buying one but i need it to do that. TXS

No

@@lexbeltran1354 I got this, and the manual says it's microprocessor controlled, you can leave it connected and it won't overcharge your battery.

@@tejasredkar5875 there's a video of someone running it for 3 days straight on repair mode

Did you ever figure it out? I have the same question

@@mycdoc had to use the repair option for a few hours then switched back to charge and it started to auto detect the right voltage.

@@0894chris thank you, im going to try that

@@mycdocdid it work?

Do the mold before you hook the battery to the charger.

Even if you connect to the power, this will not act as a jump start, this is only to charge the battery..

yes that's correct. But you can bring back to life 12V car batteries which are under 8V.. with the repair function..

Seems like Europlug so look for European plug converter ie EU to UK or wherever you are

Typically 6-12hrs

Nope

I usualy use repair mode for batteries under 9 volts or dead batteries for 20 minutes to try revive them.. Then I switch to charge mode..

@@als-techreview thanks for the reply. Yeah when I put it into charge mode it shows full after a short while. Shouldn’t it do the same in repair mode once it has completed its cycle though? It’s hard to find how this device operates 100%.

Put in repair mode for 24 hours. It then will be full and automatically switch to regular charging mode displaying full. If the battery isn't working after that it's toast and this won't fix it.

@@strtkempoit didn’t do that. I’d did go to full after about 2 days but the light Sam rated on pulse mode.

@@strtkempoalso the machine might be faulty as it takes a couple of minutes to register that it needs to auto change to 12v. Stays on 24v for ages no matter what cycle it’s on!