Rechargeable 9V Lithium-ion Batteries - 4 Pack with Speed Charger

The eco-friendly concept permeates the manufacturing process of our upgraded 850mAh Lithium cobalt oxide battery, which boasts a capacity about 2.6 times larger than the common 9V 320mAh batteries. We proudly say no to harmful substances such as mercury, cadmium, and palladium. Moreover, the self-discharge rate of our CZVV 9V Li-ion rechargeable battery is less than 1%, ensuring an impressive 85% capacity maintenance even after 36 months of non-use, translating to a remarkable 1300x service life.

Designed to provide a wonderful combination of electricity and chemistry, our product offers a powerful solution for your energy needs. The CZVV Q019 Pro Individual Portable 4-Bay Charger supports simultaneous fast charging of up to 4 channels, with preset 3 charging models - Trickle charging, Constant Current charging, and Constant voltage charging. The 5V 2A input ensures your batteries reach 100% capacity. The charger's LED lights allow you to monitor the charging status at a glance, and the 6-in-1 IC chip with a leak-proof design prioritizes safety, delivering hassle-free use. Please note that unauthorized use of other brand chargers may cause accidents.

Our CZVV Ultra 850mAh 9V Batteries are compatible with a wide range of 9-volt battery-powered devices, including smoke sensors, garage door openers, alarm clocks, wireless microphones, radios, electronic toys, flashlights, remote controls, massagers, transceivers, guitars, bass guitars, metal detectors, and multi-function instruments.

The choice of an 8.7V voltage, instead of the standard 9V, is a strategic decision based on the underlying battery technology. As we all know, the nominal voltage of a Li-ion battery is 3.7V, and the full-charged voltage is 4.2V, known as the charge cut-off voltage. By connecting two groups of 3.8V High-Energy-Density lithium-polymer cells in series, we have fabricated the K007 with an EnergyCLSave frame. Under ideal conditions, a fully charged 9-volt battery will maintain a high voltage of about 8.7V (4.35V*2), the highest voltage among all brands' Lithium-ion 9V batteries can achieve so far.

In summary, our CZVV Ultra 850mAh 9V Batteries, accompanied by the CZVV Q019 Pro Individual Portable 4-Bay Charger, offer a superior energy solution with higher capacity, lower self-discharge, and faster charging capabilities. Backed by our worry-free 12-month warranty and friendly customer service, we are confident in delivering a reliable and satisfying experience to our customers.

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