Measuring using the balance lead (so negative on b0, red to b1/b2/b3 etc) and the increase is around 3.49-3.47 between each one.amberwolf wrote: ↑Jan 17 2022 11:57pmJust to be sure, this is a different set of measurements than previously done?
I'm checking, because the results are definitely different than 3.4-3.5v per cell, and it makes a difference to whether the cells are healthy / balanced or not.
Only a couple of hundredths of a volt difference, that is pretty well balanced for a typical ebike pack (especially if there aren't any balancers on the BMS).
A tenth of a volt, however....
So for example, readings were:
Not sure if i'm doing it right or if that increment even matters, but thought i'd bring it up just in case.
Ah ok great, thanks for the clarification - i was a bit worried at first as i thought it ONLY output 40a continually, meaning the moment i plugged it in and up to a motor it would wizz off at full speed and/or blow up lol (Which is hugely impractical for the intended use of course, but sometimes i do like to assume the worse lol)amberwolf wrote: ↑Jan 18 2022 12:06amIf you mean the " 40A constant discharge current " in the item name at the top right, then that matches this spec further down (and also in the attached chart)Which would mean it can handle a continuous load of 40A pulled from the battery by the controller/motor system, if necessary. That's good in that it means it probably won't heat up as much under the smaller load you'll use it under (the actual limiting is done by your controller).Brand Name: LiRooter
Accessory Type: Battery Accessories
Model Number: Lirooter14S001
Application: for 13S or 14S 48V Lithium Ion Battery Protection
Function: with full set of protection
Constant discharge current: 40A
Constant charge current: 10A
Similarly, it can handle as much as 10A continously for charging, so it should also run cooler there, too.
But the best part of their page is that they give you complete specs of how the BMS works; all it's limits and shutdown conditions. Makes it easier to troubleshoot problems, and more predictable behavior (because if the system shuts off when none of these limits are in play, something else is wrong).
The battery is only going to be powering a few higher wattage buck converters (12v, x2 5v etc), fairly powerful LED lights and a magic pie edge motor (pulls around 30a absolute maximum for brief periods) so compared to most people I dont think i really stress these batteries.