In this video, I'll show you how to recharge a 9V non-rechargeable battery safely and effectively.

Components Required

1. 1 x Almost Dead 9V Battery
2. 1x 9V Snap Connector
3. Power Supply (Should Provide More Than 9V)
4. 1 x 10Ω Resistor

Note: You can also use an AC-DC adapter as long as it provides more than 9V. This method can also be used to recharge other batteries like AA and AAA—just ensure the charging voltage is slightly higher than the battery’s rated output (e.g., for 1.5V AA/AAA batteries, the charging voltage should be slightly more than 1.5V).

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