The short answer is 8 V and above is a good battery. It’s not the entire answer, the battery typically really starts to spiral down at about 7.4 V that’s abo Using 1.2 V rechargeable batteries will have no effect on the use of the equipment. Indeed, an alkaline battery only benefits from 1.5 V voltage at the beginning of its discharge. Then, it drops constantly to well below 1.2 V. Finally, it drops to around 0.6 V. Most equipment will work happily on anything between 0.9 V and 1.5 V. 🔋 【Easy connect Charger】: The 9V Li-ion battery charger powered by 5V-1A ~ 5v-2.4A USB input, easy to connect with cell phone charger adapter, power bank or computer USB port, car charger adapter, etc ; 🔋 【Fast, Compact Charger】: Only need 2.5hrs to fully charge 3 batteries. Replacing the traditional 6F22 9V type with a stronger rechargeable 9V battery/batteries can hopefully clear up that mishap. Coming to the surface, even the smallest lithium-ion battery pack won’t work for this because an ultra-thin battery pack is crucial for the proposed project. Opt for a 1S (3.7V)/500mAh or 600mAh lithium-polymer (LiPo How to make a 9v battery pack rechargeable at home using 18650 cells in series to replace the 9 volt alkaline battery at home. Check out this simple trick to charge your cell phone with a 9 volt battery.10% Off at Olight. Promo code "HARLEY10" http://bit.ly/2H01kzRmusic by bensound.com Probable effects of current (DC) flowing through a human body. Anything less than about 1mA is imperceptible. When we held the 9V to our tongue, about 1-2mA was flowing between the terminals. Because the tongue consists of a thin membrane with nerve endings near the surface, we could readily feel the current as it excited the nerves. To do that, you must connect the resistor in series with the charger then hook them up to the battery. In the usual case, the 12-Volt battery charger would charge to 13.8 Volts but you only need 9.2 Volts for 8-Volt batteries. That is why the resistor is needed because it would reduce the current by 4.6 Volts to match the 8-Volt batteries. .

how to charge 9v battery