Description
The Energizer Power Plus is a 9V PP3 rechargeable battery with 175mAh capacity, using Nickel-Metal Hydride (NiMH) cell chemistry. It arrives pre-charged and ready to use straight from the pack, delivering 8.4V nominal voltage under load. The battery supports hundreds of recharge cycles, making it a cost-effective replacement for disposable 9V alkaline cells in devices that draw power regularly.
Designed for smoke alarms, wireless microphone systems, guitar pedals, multimeters and medical instruments, the battery provides stable voltage output during discharge and retains charge when stored. The PP3 snap-connector format fits all standard 9V battery compartments. The 175mAh capacity suits low-to-moderate drain devices rather than high-current applications — smoke alarms typically draw 10-30mA in standby, while active wireless systems may draw 30-80mA continuously.
Each recharge cycle reduces the need for single-use batteries, with NiMH cells recyclable at end-of-life through battery recycling programmes. The battery can be recharged using any standard NiMH-compatible 9V charger. Performance degrades gradually over time and with repeated cycles, so capacity may reduce after 200-300 charges depending on use patterns and storage conditions.
This single-pack format suits households and professionals who need one replacement battery rather than bulk stock. The battery weighs 40g, slightly heavier than a disposable alkaline 9V due to the denser NiMH cell construction inside the metal casing.
Specification
| Weight (KG) |
0.04 |
| Width (mm) |
80 |
| Height (mm) |
19 |
| Depth (mm) |
120 |
| Battery Range |
Energizer Rechargeable |
| Cell Size |
9V |
| Cell Composition |
Rechargeable |
Frequently Asked
How many times can this battery be recharged?
NiMH 9V batteries typically support 200-500 recharge cycles depending on usage patterns and charger type. Capacity gradually reduces with repeated cycles, but the battery remains functional until it no longer holds sufficient charge for the device.
What charger is needed?
Any NiMH-compatible 9V battery charger works with this battery. Do not use chargers designed only for NiCd (nickel-cadmium) cells, as they may overcharge NiMH batteries. The battery arrives pre-charged but benefits from a full charge before first use in critical devices like smoke alarms.
Is it suitable for smoke alarms?
Yes, but with a caveat. Rechargeable 9V batteries have lower voltage (8.4V nominal) than alkaline (9V nominal), so some smoke alarms may trigger low-battery warnings sooner. The 175mAh capacity suits alarms in standby mode but requires more frequent recharging than higher-capacity models.
Does it arrive charged?
Yes, the battery is pre-charged at the factory and ready to use immediately. Charge level on arrival varies depending on storage time since manufacture, so a top-up charge before first use in critical applications is recommended.