Tenergy 9V NiMH Battery, High Capacity 250mAh Rechargeable 9 Volt Batteries for Smoke Detector/Alarms, TENS Unit, Metal Detector, and More (4 Pack)

4 pack 9V batteries - Exact replacement for standard 9V sized batteries. Replace single-use 9V batteries with these NiMH 9V rechargeable batteries. Standard 9V rectangular size battery dimensions: 48mm x 26mm x 16mm (H x L x W).. Money saving eco-friendly - Tenergy NiMH 9 volt battery can be recharged up to 1000 times. They will pay for themselves after 10 cycles. Reduce your carbon footprint by limiting the waste caused by disposable single use batteries. Switch over. Save. Reuse. Recharge with Tenergy.. Everyday usage - Our reusable high capacity 9 volt rechargeable battery is ideal for high/low draining electronic items. Use it in all your devices such as, TENS Unit, smoke detector/alarms, metal detector, wireless microphones, digital cameras, digital alarm clock, guitar magnetic pickup, and much more.. Lasting performance - At a battery capacity of 250mAh, the Tenergy 9V cells keep your devices running longer. With no memory effect on our rechargeable 9V nickel metal hydride battery, recharge your batteries anytime.. Tenergy protected – Our 9V replacement battery is backed with a 90-day warranty and lifetime support from our friendly and knowledgeable customer service. They also have European RoHS (Restriction of Hazardous Substances) compliant certifications.