Hello! I’m making my meepo mini 2 smaller by getting a smaller battery and different enclosure so that I dont get in trouble with the German polizei. Right now I have a 10s2p battery, I want to switch to a smaller 10s1p. I can either buy the meepo 10s1p with 25R cells, or a custom 10s1p with 30Q cells. Which battery cell is better? I have the meepo Hobbywing 12A ESC. Also, does a BMS help reduce voltage sag, or does it make no difference?
30Q definitely better. Sag comes comes from cells falling off during discharge, not the BMS.
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30Q is 3ah 40T is 4ah - a bit more $$
Both is a good choice.
30Q>25R 100% for sure. Samsung 30q cell is all around the best cell to use. I would say there are 3 top cells people use. Samsung 30q most “balanced” cell in size, price, discharge, sag and capacity. Then there is a VTC6 for more power and Sanyo cells (like in Tesla cars) for range.
BMS=Battery management system. It’s purpose is to balance all the cells to the same voltage. You can also use BMS for discharge which adds over-current protection for example. It also adds size (discharge grows with size of the BMS) I personally run/will run… (long story) bypassed BMS which only balances my cells while charging but it doesn’t discharge through it. That means that I can run as much current as I want with a bypassed BMS.
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Nicely explained.
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Is that 12a per side or total? 1p packs of 25r or 30q can handle about 20a. If its 24a total you might consider a differert cell like vtc5a or 30t.
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12A motor amps though so you could run that on a 1A battery if you wanted, hell it wouldn’t even get bottlenecked that hard. Obviously an extreme example but still, duty cycle.
Wait chinese ESCs dictate motor current?
I was always under the impression that the value shown was batt max for one side :o
They do have duty cycle I belive. I ran a 40A yingli with a 20A battery and experienced the same power when I switched over to a 50A battery (In the low range ofc, at times it was bottlenecked)