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A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
An A23 battery is cylindrical and approximately two-thirds the length of an AAA battery, measuring 28.2 mm (1.11 in) long and 10.0 mm (0.39 in) in diameter, with a typical weight of 8 grams. An A23 battery is an 8- cell device with a nominal voltage of 12 V.
The receiver is a second induction coil in the handheld device that takes power from the magnetic field and converts it back into electric current to charge the device battery. An additional part of the technology is the System Control Communication : Data over Coil (DoC) – the Rx sends feedback to Tx by changing the load seen by the Tx coil.
1.2: 22.2 × 42.9 (0.87 × 1.69) A common size for cells inside cordless tool battery packs. This size is also used in radio-controlled scale vehicle battery packs and some Soviet multimeters. 1 ⁄ 2-, 4 ⁄ 5 - and 5 ⁄ 4-sub-C sizes (differing in length) are also available. Soviet 332 type can be replaced with R10 (#4, 927, BF, U8) or 1.5 V ...
The energy used to charge rechargeable batteries usually comes from a battery charger using AC mains electricity, although some are equipped to use a vehicle's 12-volt DC power outlet. The voltage of the source must be higher than that of the battery to force current to flow into it, but not too much higher or the battery may be damaged.
By 1934, the system had been revised and extended to 17 sizes ranging from NS at 7 ⁄ 16 inch diameter by 3 ⁄ 4 inch height, through size J at 1 + 3 ⁄ 4 inches diameter by 5 + 7 ⁄ 8 inches high, to the largest standard cell which retained its old designation of No. 6 and which was 2 + 1 ⁄ 2 inches in diameter and 6 inches high.
Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.
In Europe, 12 volt plugs and sockets are not specially regulated and do not require approvals for the CE mark. [citation needed] The male plug is sometimes used to feed power into a vehicle to recharge its battery because it usually has no regulatory circuitry between the outlet and the car battery. For instance, portable solar battery ...
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