Nov 13, 2017 · If the problem is the battery and not the charger, you can likely fix this problem yourself through a simple charging and discharging process -- and it makes sense to try, since replacement Ryobi batteries can cost a third of the price of a new tool. If the discharge method fails to refresh the battery, some of its power cells may need replacing. hello, i have 2 ryobi 18v one+ batteries that i haven't used in a couple months. i went to charge them, and when putting them in the charger, the green+yellow lights come on right away showing they are fully charged...but they're totally dead. Ryobi P118 18V Dual Chemistry Lithium Ion / NiCad Battery Charger with 2 Genuine OEM P102 Compact Lithium Ion Batteries (Includes 1 x Charger and 2 x Batteries) Add To Cart There is a problem adding to cart. When the P117 charger was released, Ryobi only had the P100, P103, and P104 batteries, for which the full recharge times are 49, 37, and 69 minutes, respectively. So the "one hour or less" claim makes sense. Later, Ryobi released the P102 and now this battery is being marketed as Ryobi's "standard" battery.