Tag: lithium-battery

My 20V cordless drill keeps dying after just a few screws which is maddening. The charge light shows full, then it drops to one bar under load. I store the batteries in my unheated garage, and the charger says they’re fine. I’ve cleaned the contacts, tried two batteries, and even slow-charged overnight. Buying a new drill isn’t in the budget right now, so I need a fix or maintenance routine that actually helps. Is this a battery health issue, a charger problem, or something with the drill’s electronics?