R/C Tech Forums - View Single Post - Charging protocol. Advice needed
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Old 03-17-2018 | 12:40 PM
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fredygump
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My understanding is that the cycling of the batteries makes a difference in "blinky" classes where motors are tightly controlled and where power and peak RPM are limit by class rules.

But from what I've heard, it is not relevant in offroad, especially getting into 1/8 scale. Maybe some benefit in 1/10 buggy if there is a stock class, like 13.5 blinky? But the best discussion I've heard about this says that it is 1S classes that get the most benefit. I highly doubt you will notice a difference in a 1/8 scale.

1/8 offroad is already over-powered, and you can pick whatever KV you want. If you want more RPMs, just get a higher KV motor. In 1/8, there's no limit on KV, and most guys run a fairly mild 1900kv, but you can have like 2200kv if you want it. And with offroad you are rarely flat out at max RPM. You might be spinning your tires to max motor RPMs, but you're not cruising at a constant speed that is limited by your motor's max RPM, as in the case of on road racing.

So I would say don't do it. It won't give you any benefit, it's a hassle, and extra cycles on a LiPo will shorten it's life--life span is rated in cycles typically. Fast charging/ discharging add cycles that could otherwise be used on the track!


I've been using a cut-off of 3.6v on my buggy and truggy. I still get 15-20min run time, and it reduces the chance that a single cell can over-discharge. Our ESCs don't monitor individual cells, so there is no protection from a single cell dropping below a safe limit while the rest of the cells are OK. The LVC is effectively an average of all cells, and it works when all the cells are discharging at the same rate.
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