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The Right Technician Is A Licensed Technician
Made In China Toy & Kid Car Ride-On Vehicles

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EZ Scooter & Toy Repair Shop North Las Vegas, NV 89081
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As batteries age, the "state of health" tends to degrade in many small ways which, generally, add up to a loss in capacity. This problem manifests itself when we have a battery which claims to be fully charged, but runs out of power much more quickly than it should. A battery with a particularly poor state of health may in fact charge to 100% - but only at 20% of its original capacity. To the state of charge indicator, a 100% charge is a 100% charge - it doesn't "know" that the capacity is reduced.

CCA is how much current the battery can supply in a short amount of time.

Cold cranking amps (CCA) is a measurement of the number of amps a 12-volt battery can deliver at 0 ° F for 30 seconds and not drop below 7.2 volts. So a high CCA battery rating is good especially in cold weather.

Amp-hours is how long the battery can output a current at a certain rate.

An amp hour (AH) is a rating usually found on deep cycle batteries. If a battery is rated at 100 amp hours it should deliver 5 amps for 20 hours, 20 amps for 5 hours, etc.

Dynamic Internal Resistance is the resistance within a battery, or other voltage source, that causes a drop in the source voltage when there is a current.

Battery 1: Good battery. Capacity and CCA are high. Dynamic Internal Resistance is low.
Battery 2: Defective battery. Low capacity but ample CCA. This is a common failure.
Battery 3: Defective battery. Low CCA with ample capacity. This is less common.
Battery 4: Defective battery. High dynamic internal battery resistance

CA is cranking amps measured at 32 degrees F. This rating is also called marine cranking amps (MCA). Hot cranking amps (HCA) is seldom used any longer but is measured at 80 ° F.

Reserve Capacity (RC) is a very important rating. This is the number of minutes a fully charged battery at 80 ° F will discharge 25 amps until the battery drops below 10.5 volts.

Determining A Battery’s State of Charge