This was a good video that's why it ranks high on the search results for this procedure. Too bad we don't know if this battery is as long lasting as the originals in terms of jump start uses per charge. My original battery is showing me that it won't hold a charge as lying dormant as good as it did for the first few years. So decided to check if I could replace the battery, how much it would cost, and which battery should get (so many knockoff junk batteries for sale online) This video is how any video should be done at the very least!
I had to go the other way. I went from the threaded posts in the original units battery, to a new battery with the spade terminals. The problem is theres limited room to smoosh those cables around when going from one connector to another. You can probably force it but be careful bending the jumper cable terminal or it will break easily. And I had to purchase two small bolts when putting in the new one. Also I found its easier to prop the battery upright when connecting and disconnecting the terminals. Then gently set it back in once connected. Mine did not have double sided tape, just foam cushion pads.
Since you install the lithium battery doesn't it have to be charged with a lithium charger? And does it have the cold cramping amps to start up a car? Do you have to swap the battery with the same amp hour? Great video!
this battery has charging logic and discharge logic built into it. So It is fine using a standard charger on it. discharge logic limits it to 50A, so in some conditions its not as strong as the lead acid that came out, but it is enough to crank a vehicle with a weak battery. Ive proven this in a follow up video.
Thank you the video, Pat! I’m looking on doing the same replacement to my jump starter. Can you still rely on the auto shutoff when charging the battery, or do you just keep manually checking the battery voltage reading until it’s full? How long is your typical charging time?
I'm also curious whether the baked in Lead Acid trickle charging circuitry in the old jumper is going to work properly with a Lithium battery (with the appropriate BCM attached to it - obviously it would be a terrible idea otherwise) Does the light ever turn green, or does the box supply voltage to the Lithium BCM continuously, with the BCM rejecting charge once the battery has hit capacity? Does it bring the Lithium battery all the way up to full charge? Does the battery get warm/hot to the touch during charging? Is the discharge capability of the LiFePO4 battery suitable to the AMPS needed during a jumping operation? Have you managed to cycle it a few times successfully at this point? Thanks!
Hey Pat, first off forgive me in advance. I was just forced to watch the video with no sound. I’m sure you answered this question but, the battery that you pulled out wasn’t lithium was it? Just worried about the charging situation considering there is no battery management system for the new battery.
It's essentially a trickle charger built into the jump box. The battery manufacturer claims to have built in charging logic as well that prevents over charging and over current discharge. So technically there are two levels of charging logic/safety I'm using. And as always I won't leave a battery charging unattended, for just good shop practices.
Charging circuitry and methodology is entirely different for lithium ion vs lead acid. Though I appreciate the ingenuity, as others have expressed concern, I'd strongly urge an understanding of the potential danger before doing this suggested replacement.
@@Patman03sprcrw I did provide factual information. As I factually stated "Charging circuitry and methodology is entirely different for lithium ion vs lead acid." You're welcome to do your own research, there is plenty of info out there. I am a for real EE who has been designing battery and power systems for many years. Perhaps you reverse engineered the charging circuitry in the JNC660, and know that it provides the correct power curves, voltage, temperature monitoring and conditioning for charging lithium batteries? If so, I'm all ears ;-) I didn't say what you propose wouldn't "work" (in quotes, because "work" is subjective, what you may consider "work", others may not), and it may...but it may not. I simply suggested people do some research to make sure that what you are suggesting people do is in fact safe, as it is just a fact that improperly charging lithium batteries can be potentially, well as you say, dangerous. Far more so than lead acid batteries.
If the lithium battery has its own bms wouldnt that suffice for cutting off the original dumb chargers small amp power input? Id imagine the original jump box charger actually wouldnt fully charge the lipo battery as its less max volts. As an EE could you see a way to make this safely work?
Also how much was that battery because the amazon link you put is not available. did you pay $100 for a battery? I almost considered selling my old one and buying a new one because these weren't expensive new.
I have not had any issues. This particular LiPo battery has internal regulator/chip inside the battery. I have several videos on this jump box, feel free to check the other ones out too
Did it test okay? Able to start a car without any other battery connceted in parallel? Original battery could prob push 150 to 300A but the BMS in this lifepo4 one might limit it before the car can start..?
I did this replacement on my battery box and charged it for 5 hours and the light stayed red. The voltage meter read 13.6v which is what the battery owners manual stated to be fully charged so I unplugged the cord.
Did this work? I just converted my jump pack with a lithium lifepo from ebay and it wont jump start a car. It does say on the battery that it can't be used for jump starting. I dont know why it wouldn't work.
I can never get my cables on or off the unit without a fight. I feel like I am going to stress the cable and it might come loose. Should it be like that?
When storing the cables around the case, try not to "stack" the cable clamp over the previous cable wrap, should be enough space to go side by side if that makes sense. And hopefully I understood your question correctly
You are distracting looking to the right and not directly in the camera. So how did the change over work? You never showed us anything after you converted to LIPO... bummer!
