My iCharger X12 started playing up a couple of months ago - consistently failing to balance string #8 however long I waited.
Opening it up I found that the 8th (J42cg) FET had blown open-circuit. Not having any replacement transistors, I tried a temporary repair by desoldering #8 and replacing...
Imagine you had a 7s4p battery where one of the parallel groups was weaker (lower capacity) than the others. Is it allowable to add another cell to that parallel group (only) to boost it up? So that group would become 5p, which might now make it the strongest group in the pack. Are there any...
I have a 10s6p e-bike pack that I want convert into a 7s9p without completely breaking down the pack so I have cut the nickel strip series string at 7s and am redistributing the cells from 8s-10s back to 1s-7s in parallel-connected groups of 3 by means of wires rated for 15A as illustrated in...
Anybody?
To clarify what I'm trying to achieve. I have 3x 10S6P li-ion packs that I want to make into 1x 10S18P pack running off a single BMS. So I have to connect the 10 parallel groups of each pack together. The problem is how to achieve that efficiently.
I was also considering converting...
Hi,
I want to connect 3 identical 6P packs' parallel strings together side-by-side to operate as a larger pack off a single BMS - 2 questions:
1/ would it be sufficient to make the nickel strip connections between packs, illustrated by red lines in the pic below, to just 4 cells out of each 6...
Thanks for your reply. So let's say I already have a battery pack with a BMS that I want to balance-charge with an iCharger. Are you saying I can't use the existing battery output lead (from the BMS)? Are you sure of this? How inconvenient!
Building my first e-bike pack, I plan to have a BMS and a bulk charger wired to the BMS, but I also want to be able to use a balance-charger periodically to monitor and fine-tune the state of the in-series groups. The question is how to connect the balance charger to the pack? Should I unplug...
Indeed. I also unscrewed the battery mounting plate on the bike which had helpful "+" and "-" signs next to the respective terminals, albeit on the underside.
No battery or charger, missing rear brake shoes and the SRAM 3-speed hub shifter held on with a zip tie - the seller wanted £200, I offered 100, arguing that, besides having to source battery and charger, I had no way of even knowing if the motor worked. We settled on 120.
Somebody had...
I had a look at the controller for the RS2 - see photo below. It's a different controller, differently wired from the Express. What is intriguing is an unused black 2-pin connector to the controller with red and white wires that looks like it could be for a speed sensor.
Thanks for responding, yes it's a speed (not cadence) sensor mounted on the rear triangle - I had my terminology mixed-up. On the Twist Express it detects a spoke magnet to determine speed. Derestricting simply involves mounting another magnet on the crank and relocating the sensor to line up...