ES2 Slowdowns during high speed with extra battery
Hi,
I recently bought an ES2 with the extra battery (ES4) and once reaching top speed it is not a smooth ride but every couple of seconds there is a slowdown, like someone is applying a brake and immediately releasing it.
* It only happens with the extra battery (removed it and the issue is gone, maybe because I didn't reach the max speed).
* It only happens when battery is lower than 70%
Any idea?
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