xyster wrote:Thanks. I got the voltmeter and ammeter from allelectronics.com
The batteries used to be good for 1.8c or 59 amps at my 33 amphours. After I damaged some in an overdischarge accident, the pack as a whole only puts out about 36 amps at 60F, and 33amps at 40F.
The x5 really needs 72v and at least 20 amps to really begin to shine. It takes that much to get its 25lb mass rolling quickly.
xyster wrote:I haven't taken mine apart either. The covers look pretty hefty don't you think? Are you thinking about getting the threaded cover for disc brakes?
What are you using for rear brakes?
Woah, no back brake no wonder you were going slow in that vid on ice.
That thing muct be pretty hairy off of paved roads.
Closeup pics of the lights please?
Am I misreading those batteries or do you have them in Parallel and series as one large 31 amp hour 7.4V battery?
Xyster, on the side of the battery pack where the cells are jumpered to put them in series, the wires running parallel, will theoretically carry no current, and are therefore unnecessary, at least from a power standpoint.
it might be a good safety feature if the individual series strings each had their own fuseable link to protect against a single cell shorting.
Now that I think about it, the low current wires will help balance the cells, but since the current is very low, you could use much skinnier wire, which might be easier to deal with.
I guess I was thinking some of the jumpers (ones that say "most current") could be replaced with fuse wires. Of couse, too late now for that one.
I just keep remembering that Valence video of the lithium battery that has a fairly spectacular "thermal event" after being hit. Having a few cells go off would be better than the whole pack. See the video here:
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