2016 Prius v, 168,000 miles. Battery seems in good shape. Cleaned my fan and decided to pull the cover and check the bus bars. No build up of corrosion seen but there is discoloration of the bus bars. Was thinking of replacing them with nickel-plated. I would like to service the battery by rotating the modules. I don't have a charger and was wondering if I charged it as much as possible in the car before pulling it, if I could rotate the modules, balance the modules by connecting in parallel for a couple days, and replace bus bars, if that would be adequate. Or, is discharging and charging absolutely necessary to condition the battery?
Your battery looks to be in excellent condition. I would just let it be. Sometimes, when things are working just fine, you're better off just leaving it alone.
