Sealed Lead Acid (SLA) - 2 Volts per cell
| Sealed Lead Acid (SLA) Batteries |
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This battery is also known as the Gelcell battery. It is "sealed" and contains lead plates and acid "gel" just like a car battery. (There is no requirement to "top it up" with distilled water). It is heavy and commonly used where bulk power is required, weight or size is not critical and cost must be low. Applications are in Uninterrupted Power Supply units, "bag phones", emergency lighting, alarm backup systems, wheel chairs and portable hospital equipment. It has no "memory" problems but it must be regularly charged (topped up) to maintain good charge acceptance. It has a charge/discharge life of 200 to 300 cycles. The Lead content makes the battery hazardous to the environment. |
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