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Significant information’s in favor of a professional Workshop => All about Alkaline and Rechargeable Batteries NiMH => Topic started by: Kiriakos GR on September 17, 2025, 02:00:31 AM

Title: NiMH chargers - Math formula - Battery capacity and Required Charging times
Post by: Kiriakos GR on September 17, 2025, 02:00:31 AM

There is a simple way to account for the charging times.

First, check the charger label to get the charging (output) current (120mA for AA cells).
Then Charging Time (hours) = Cell Capacity X 1.2 / Output Current

For example, for AA 2000mAh rechargeable battery
Charging Time (hours) = 2000mAh X 1.2 / 120mA = 20 (hours)
 

Title: Re: NiMH chargers - Math formula - Battery capacity and Required Charging times
Post by: Andrew-88 on September 22, 2025, 10:27:08 AM

What it does missing from the market, this is smart chargers them able to calculate End of Charge time in minutes.

Thanks mate !!