Concerning Li Time batteries there is a post on irv2 or rvforum that his Li Time battery is giving him grief over the tongue jack and Li Time says their battery is not for that type use and won't warranty a fairly new battery. Anyone have an issue like that as Im about ready to get two 100ah and Ive got hydraulic levelers and Onan 5500 genny ?
How can I find the information that you mention?
I was working with a guy who had warranty
denied by LiTime because he had Lippert Ground Control leveling system, which uses DC motors. He shared correspondence that he had with LiTime so I know it was legit. They specifically said
not to use with "
jacks". Basically, just about
every camper has a front jack of some kind! This guy found out, without LiTime's serious lack of support, that his problem was a low voltage disconnect (LVD) and nothing related to Ground Control.
He had 200A continuous, 600A 5s, 230Ah battery so Ground Control with 50 A circuit breaker should be no problem,
IF LiTime BMS does not have a fatal flaw. Lippert says 60Ah LFP is fine for GC. His loads were low with gas fridge, no inverter installed, ...
From what I have read (and heard from one manufacture & read in manual of other) once battery goes into LVD you have five days to get is started, and after that it can be very difficult if not possible. The battery is now degrading and if it can be
used as intended is unknown. They offered him 20% discount to purchase a new battery because he has Ground Control.
Heard second or third hand mention of
LiTime problems driving hydraulic systems (have motors).
LiTime's concern is
in-rush current (way too fast for especially most/all circuit breakers or most fuses to catch) from
electric motors killing BMS, (this is my comment) which can be roughly 4/5 times the motor running current.
If you are using
LiTime to start Onan, this also is a real issue. They say
not to use as starter batteries, on their web site. Look deep into web page on battery, it says not ok for starting.
Expect any possible reason to deny warranty, money spent to ship battery to them for evaluation and
months of delay if you get any resolution.
Please contact LiTime tech support and ask them some very specific questions... Please let me know what you hear! Thanks Anyone reading all this do not believe me and contact LiTime on the web form link. It is easy and fast. Tougher questions take more time to hear back.
I have two barely used LiTime batteries that are OK so far.
Pushing these BMS could be an issue? Sure the cells may last a very long time under good conditions, but I do not know if many of these custom BMS are tested for longevity. A BMS can work for a while, just fine, but if the MOSFETS are heavily loaded they may degrade with use and fail. So,
because it is working is not an indication that it will work for a good amount of time. Proper sizing is important with any brand.
Added 1/11/2025: I will run both 100Ah to reduce how much current BMS see when using front jack and Ground Control. If I had and inverter, I would make sure it was off or lightly loaded at same time. People are running GC with single 100Ah LiTime.
Hopefully.
