I have a BCD325P2 and a BCD436HP scanner that run on AA batteries. I like the 325 (2 AA’s) but battery life isn’t what I had hoped, the 436 (3 AA’s) last longer but not by much. So I ran the rechargable nicklecadium Eneloops. Or I would buy the Energizer extended life lithium disposable batteries but they aren’t cheap. I asked myself “Why don’t they make the same AA Lithium in a Rechargable version?” Then I noticed a RECHARGABLE AA Lithium battery sold by Amazon called “TENAVOLTS”, 2775mWh. They sell a 4 pack that comes with its own charger. The rating is not in mAh, instead mWh and I didn’t do the comparison as to how they related but gave them a try anyways. The TENAVOLTS have internal circuitry that drops the voltage level to 1.5 volts, necessary due to a lithium cell’s 3+ volt rating per cell. They fit just like a common AA alkaline. Battery life is improved. I haven’t done any real comparison testing yet but initial results look very good... maybe in the range of an additional two hours of operation? The cost for the TENAVOLTS is a bit steep at $35 per 4 cells and a charger, and they don’t charge in the radio. But charging time is quick, about two hours. I’m happy with them. The only thing left is to see how long they last!