Note 1: A common battery is usually an electrolytic device and is usually centrally located to the equipment that it serves.
Note 2: In many telecommunications applications, the common battery is at a nominal -48 vdc.
Note 3: A central office common battery supplies power to operate all directly connected instruments.
Note 4:Common battery may include one or more power conversion devices to transform commercial power to direct current, with an electrolytic battery floating across the output.
Multiple batteries or cells may also be refered to as a battery pack as a set of multi-cell 12 V batteries in an electric vehicle.
This battery is notable in that it contains a liquid in an unsealed container, requiring that the battery be kept upright and the area be well-ventilated to deal with the explosive oxygen and hydrogen gases which are vented by these batteries during overcharging.
A battery explosion is usually caused by the misuse or malfunction of a battery (such as the recharging of a non-rechargeable battery or shorting a car battery).
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