Why Is My Ryobi Battery Charger Blinking Red? They are compatible with Ryobi p102, p103, p104, p105, p107, p108, p109 and fit all Ryobi 18v one+ system cordless tools. They are just as powerful and often 1/2 the price of a genuine battery. I have had great success with using the cheaper aftermarket Ryobi 18v One Plus 5AH batteries. It is no wonder people like to fix these batteries due to the huge cost of buying genuine Ryobi 18v One + batteries. Positive will be on one side of the battery pack and negative will be on the other side. This is where we will attach the jump start fly leads. Locate the positive connection point and the negative connection point for the battery pack. These hold the battery to the power tool. To pull out the whole internal battery pack you will also need to remove the two battery spring clamps. Note this will void any warrenty on the battery. A battery drill makes this process faster as the screws are long. To try and revive Ryobi batteries you will have to disassemble the battery by removing the 5 torque screws using a T10 security Torx screwdriver. We can fool the charger by temporally increasing the internal voltage using some alligator clips and the stock charger or using a 12v smart car charger. This will pull down the whole pack voltage to where the charger thinks it is unsafe to charge. The reason these lithium battery packs usually fail is one or more of the internal lithium cells have a low voltage. A Torx T10 bit it required to open up Ryobi batteries.
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