Rebuild, Refurbish and Upgrade the Ni-Cd battery packs in your power tools , cordless phones, remote control toys ... any power pack with two or more cells. Upgrade the mA (mA = milliamp) of your original by as much as 40%. What does that mean? Or, what does that do for me? mA is the 'quantity' of power available (amperage) to do work. mA translates to hours of use (mAh or Milliamp hours) by dividing the mA by 1000. Therefore; 1500 mA is equal to 1.5 hours of use. 1500 mA is typical for most older Ni-Cd power packs. The charger should accept and charge up to 2100 mA (that equals 2.1 mAh or 2.1 hours). But that . Trying to force it to charge cells higher than 40% of the original mA would exceed the limit of its perimeters and will result in you spending more for cells that will never fully charge. Here's the math: 1500mA x 40% = 600mA 1500mA + 600 = 2100mA Most new / replacement cells will recharge 300 to 500 times if properly charged, discharged and stored when not in use.
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