methods wrote:There are more cost effective solutions for that particular problem.
I like 4S lipo for a Lead Acid replacement but the hot voltage is 16.8V which trips up some DC-AC Inverters and other "smart" electronics. It will be fine for most things that plug into a ciggy lighter though - as car 14V is noisy as hell.
I guess the important thing is the load they are going to run and for how long.
IF they are not pulling 80A then you could go with a MUCH cheaper 18650 Laptop cell pack with a built in BMS for total protection.
methods wrote:Oh yea...
A couple of days ago Matthew and I took a 30 mile ebike ride. I had a 24S 20Ah pack and he had an 18S 15Ah pack. His pack was almost new and we had no reason to believe there was a problem. 12Ah into the trip his cell level LVC started tripping... The pack was still at 66V~!!! We had pack level LVC set at a conservative 58V - and that was useless. One group of cells was already at 3V when the rest were still up near 3.7V.
It was pretty awesome seeing the system actually work in (what I would consider) a bit of a freak situation. Neither of us thought he had a problem with his pack...
Makes me want to install a system on my pack
I mean... those cells still have to be replaced so it is not like it saved us any money... but I am not sure what would have happened if we had pulled 3AH more through those cells. I suppose we could have reversed them - though I have never done that with a pack. I think Lyen did once
chroot wrote:Hey methods, I forgot ask you to send me one more extra throttle-lvc cable and how much cost? BTW I received the throttle-cable from post office. Thanks!
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