Napco Alarms GEM-P816 Alarm System Battery 12v 4.5Ah
OSI Batteries is your One Source for replacement Napco Alarms Alarm System backup batteries. This 12v sealed rechargeable battery fits Napco Alarms GEM-P816 model security alarm systems. We recommend checking your existing battery for size and specifications prior to ordering as manufacturers may change requirements without notice.
| Chemistry: | Sealed Lead Acid |
| Nominal Voltage: | 12v |
| Nominal Capacity: | 5Ah |
| Dimensions (In.): | 3.54 x 2.76 x 3.98 |
| Terminals: | .187" F1 |
| Weight (lbs): | 3.79 |
| Warranty: | 12 months |
| Condition: | Brand New |
| Notes: | 3-5 Year Design Life |
Reviews
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4.7
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August 6, 2026 by Gilberto O. (CA, US)
“Quick, simple and didn't have to create an account that I probably won't use for a while.”
August 6, 2026 by VICENTE C. (TX, US)
“good pricing and easy to buy and check out”
August 6, 2026 by Woody B. (IN, US)
“Standard online ordering protocols.”

