Search found 6 matches

by KiefRichards
Jan 18 2022 1:16am
Forum: Battery Technology
Topic: How important is matching li-ion cells in a largish pack made entirely of new batteries?
Replies: 17
Views: 484

Re: How important is matching li-ion cells in a largish pack made entirely of new batteries?

Emark, thanks for pointing out my error in checking for high self discharge without charging then first. So the delta I measured is meaningless. I too, wondered why the voltage is higher than the shipping voltage on the datasheet. I just rechecked it actually shows “>3.45” so apparently it’s ok. I t...
by KiefRichards
Jan 16 2022 8:38pm
Forum: Battery Technology
Topic: How important is matching li-ion cells in a largish pack made entirely of new batteries?
Replies: 17
Views: 484

Re: How important is matching li-ion cells in a largish pack made entirely of new batteries?

Yup, datasheet says 3.45 shipping voltage.
I didn’t know that was on the datasheet. Thanks!
by KiefRichards
Jan 16 2022 8:17pm
Forum: Battery Technology
Topic: How important is matching li-ion cells in a largish pack made entirely of new batteries?
Replies: 17
Views: 484

Re: How important is matching li-ion cells in a largish pack made entirely of new batteries?

Thanks for the input, everyone. I ordered the above IR tester and well check them when it arrives. Will be returning that AAA battery analyzer, haha. In the meantime, I checked the voltage of each battery. Highest voltage: 3.550 Lowest voltage: 3.541 If I throw out the 2 highest and lowest cells Low...
by KiefRichards
Jan 14 2022 7:52pm
Forum: Battery Technology
Topic: How important is matching li-ion cells in a largish pack made entirely of new batteries?
Replies: 17
Views: 484

Re: How important is matching li-ion cells in a largish pack made entirely of new batteries?

Thanks for response, it was helpful. Hopefully the batteries are legit and close in specs. They came in a fatory-looking box in sets of 100. The batteries are from 18650batterystore.com https://www.18650batterystore.com/collections/21700-batteries/products/molicel-p42a I went ahead and order this in...
by KiefRichards
Jan 14 2022 3:20pm
Forum: EScooter/EMotorcycle Build Threads
Topic: first build/new help needed. CRF450
Replies: 6
Views: 347

Re: first build/new help needed. CRF450

Id contact QS directly. I just bought a 138 V3 with EM150/2 from them and the total cost with shipping was about $200 less than alibaba. Just fyi
by KiefRichards
Jan 14 2022 1:34pm
Forum: Battery Technology
Topic: How important is matching li-ion cells in a largish pack made entirely of new batteries?
Replies: 17
Views: 484

How important is matching li-ion cells in a largish pack made entirely of new batteries?

Hello there. Reaching out with a question about pack assembly. Ive searched but most info I’ve found here was regarding used li ion cells and I’m using new cells. I’m building a 20s10p pack for a small off road motorcycle with a QS138 motor and em150 controller. I bough a 210 new Moceil P42a batteri...