Oh. And tell me more about this BT app!
Got your message and haven’t had a chance to respond yet. Be glad to go over it in more detail. The battery you have is an lfp battery. Those batteries are okay being charged to 100%. It has a cycle life of over 2,000 charges from 100% to 0%. Be glad to get you some more detail.
2000 charges will likely outlast this old guy but I’ll never say never 
.
Just a few other questions though.
What capacity is this battery?
If I get a battery with more capacity for my E4 when the lead batteries die off, will a bigger lithium use the same charger algorithm as this one (28)?
Is there an app for iPhone to download to monitor this battery?
On the monitor that came with this battery, when the little battery on the left indicates 99 or 100 ah, and the number on the right says 100%, would I assume that when the little battery says 90 ah at 100% that I might have lost some 10% of battery capacity? Something I may never see but info I’m just curious about.
That’s about all for now. I’m happy that my wife is happy finally having confidence her little GEM will get her home from the golf course 
I would also like to purchase a lithium charger. How do we get in touch?
What battery and model car?
Wayyy more info needed to offer a proper solution.
As Inwo stated:
What battery and model car?
Where did you get your batteries? Does the manufacturer have a suggested charger?
What color is the car?
>have multiple people that have done that. The versions I have are lithium programable
Hi, still pondering whether to upgrade my Delta Q for your batteries. This is the model I have, what do you think? I have tried every method in the book to get it in programming mode without luck. It is currently using profile 13. Thanks!
which batteries are you using it with?
For your Mighty Mite pack?
I believe LG was suggesting the standard #13 was ok.
Is your pack working OK?
Can you post a screen shot of your status page after a charge cycle?
The main difference between 13 and 14 is saturation. 13 is for a larger lead pack that will require more time, held at a set voltage, to fully charge. This is important on lead but not lithium. You can change to 14 but wont see any difference in MM battery performance/
The Mighty Mite pack. I’m just putting it back together now. I’ll charge it up and include a pic of the battery status.
Thanks
Thanks for the info. Quite happy with it as is but just wanted to make sure it was good for the long haul.
Thanks
>Can you post a screen shot of your status page after a charge cycle?
Before charge cycle:
After charge cycle (about 2 hours charge time):
Hello, Hoping this is an acceptable thread for this question.
I bought 6 12v 100AH LiFePO4 batteries for my 2000 72v GEM
The package also included 87.6v 10A charger. My question is how to hook up the charger to this group of batteries.
The charger output has a black wire and red wire. I’m just not sure where to hook up each wire to the battery group.
before we get to that, did you check if these batteries can be hooked up with 6 in series? Most can only be hooked up 4 in series. Cant see manufacturer to look up myself. This is important.
@Eingarrett - I’m not sure where to start here…
The simple answer to your question is → exactly where the original charger was wired up.
The black wire goes to your B- tab on your charger.
The red wire goes to your B+ nut under the dash (where the fuse is).
However, There is an elephant in the room that should not be ignored.
This does not fix the other problem you have set yourself up for.
Eventual battery pack failure.
This setup 6) 12v LiFePo4 batteries is not a good choice,
It is proven that connecting 6 individual batteries in series does not provide a stable power source for use in a Gem Car. If you go back to where you purchased these batteries, I bet there is a footnote in there somewhere that says “Do NOT connect more than 4 in series”. Even connecting 4 is a crap shoot, only that survival odds are a bit better.
I truly wish you would have come in here first with your plans before purchasing your Lithium packs. We could have saved you from such a thing.
Many others have gone down the exact same path. The archives in this group are cluttered with several attempts and their failures.
While the plan/theory seems simple, there is an inherent problem with hooking multiple lithium batteries in series. It will seem to work for a while, but eventually the pack will fail within a year.
Due to small build differences in each battery, connections, interconnect cables, and that the 6 individual BMS units do not chat with each other, the pack will eventually become unbalanced, not charge properly, and the lowest battery will shut down the whole pack early.
I don’t think anybody that knows what they are doing would suggest this as a viable solution. Even a few big manufacturers tried it and now abandoned the practice.
Hi,
I think INWO and Old houseboater know more about these chargers than I do. I’d hate to give you wrong info.
Dave
I can barely make out Enjoybot on the side of one of the packs.
Looks like they are promoting 6) parallel config with their new “Upgraded” battery. I’d like to see details on this “upgrade”.
From the bullet points:
Enjoybot LiFePO4 battery is used for energy storage instead of starting battery. Discharge current of 1C. Designed to support golf carts with a motor power of up to 6kW and a maximum controller current of 400A.
I remain very skeptical.