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MIKE'S TOOLKIT
MIKE'S TOOLKIT HOMEPAGE

Battery Health Calculator

Industry standard requires standby batteries to be replaced if their capacity falls below 65% of their original rating.

Battery Health

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Enter a rated capacity to see minimum pass threshold.

Common Battery Sizes

💡 Click a battery size to set the Rated Capacity.
Battery Size (Ah) Minimum Pass (65%)
1.2 Ah0.78 Ah
2.1 Ah1.37 Ah
3.2 Ah2.08 Ah
7.0 Ah4.55 Ah
12.0 Ah7.80 Ah
17.0 Ah11.05 Ah
24.0 Ah15.60 Ah
38.0 Ah24.70 Ah
65.0 Ah42.25 Ah

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