Hello all,

I have a micro rs4i it came with 5-cell 1200 mah NiMh batteries and I upgraded them to 6-cell 1300 mah NiMh and installed a Hobbywing EZRUN Brushless kit which comes with 7800kv motor and 25A ESC. But I am coping with multiple issues.

Since the batteries are fresh from the stock, I wanted to form charge them. Appearantly 0.1A or 0.2A Charging Rate (0.075C - 0.15C) misses peak detection (anyways I charged them for ~15 hours). At first charge at 0.075C batteries ended up at 8.25V (where they were meant to be around 8.45) then I discharged them at 0.1A. Although the charger says they are at 5.39V, voltmeter was saying they are at 7.2V (I think this is due to voltage drop during discharge)

Other than these, ESC Low voltage cutoff engages at 7.2V too no matter if I disable it or set it to 5.6V. So I thought there must be an issue with the freshness of the packs (huge drop of voltage under the load). For experiment purposes I tried to discharge the batteries at 1.0A for a while but discharge amperage got stuck on 0.7A. I am using Imax B6AC. Is my batteries faulty or is it my charger?


Thank you