Inwo
September 25, 2015, 6:54pm
1
I’ve been thinking about LiFePO4 conversion and charging schemes.
Found a source for 10a or 20a single cell isolated chargers. Total cost is not much more than a good brand 48v or 72v 20a charger.
At first thought, using 15+ (or 25) chargers seems complex, yet it seems to simplify the over-all system and serviceability.
No need to bottom balance. Or balance at all.
Just keep track of discharge. Or better yet monitor for a low cell, using the simplest single cell bms boards, to warn of low cell voltage.
With experience, just monitoring total voltage may suffice.
Sounds like a Gadget Freaks nirvana. In reality, in the real world ,successful installations running on the road have no BMS and the next step up usually have a no frills BMS. Monitoring SOC should get you by in most situations.
Since nobodies talking about failed cells from going naked I would question the validity of going so complicated on a recreational road machine.
I would REALLY like to hear what the rest of you think.
Inwo
September 26, 2015, 11:51am
3
Thank you for your input.
By the time I need batteries, I’m hoping for an affordable, drop-in system.
I’ve looked at all options, even quotes at dealer and distributor levels.
Wouldn’t consider freaky ideas if my delta-q could be reprogrammed.
For anyone interested, here’s my charging curve of my 8X6v car. Trojan lead acid.
Hmmm
I thought you had a GEM cart and was looking for 90+ volts. I take it you have a 48 volt cart.
Inwo
September 26, 2015, 5:22pm
5
I have a Tomberlin E4 also. Haven’t done much with the Gem yet.
Is there a thread for comparing program settings? I just got my cables done for handset, but I’m pretty cautious yet.
In fact all I did is read the first 15 codes.
ps.
Inwo
September 26, 2015, 5:31pm
6
Not much of a picture. My garage.
