Not if you run Thunderpower batteries like I usually do.

You can buy a 20 amp balancing charger under $90, and never wonder "Did I put a battery that was charged in?" again. Cleans up your pits too.



Sadly, I don't have the charger, power supply, the tools, or any parts anymore after some meth head stole it last Saturday when I was running the A at the Kimbrough 4:00, but I'll have something similar soon enough once they come off backorder.