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I have a questions regarding the installation of an external battery to an electric scooter. I watched this video "" in which they put an extra battery connected externally in parallel with the onboard battery. 1. Is that okey to do if the batteries are at different states of charge when...

Hello, I bought a Renogy 40A MPPT solar controller. I have a lithium-ion battery at 12.6V. (currently charged at 11.2V) I have entered the voltages: Equalizing voltage=9V, Boost voltage=12,6V Floating charging voltage=9V, Over-discharge voltage=11V, Over-discharge return voltage=10.5V, The...