Does this come with the charger?

Hello, this batteries without comes with charger. Thanks.

Is this compatible with training collars for dogs?

If It use CR2032 batteries, you can try our rechargeable LIR2032 batteries, they are same size. Rechargeable type of batteries needs to be charging by charger, you can buy together with our charger. Thanks. CT-ENERGY TEAM

Has anyone used in votive candles? I tried it only lasted four hours the next night they came on and they were dim.

The rechargeable 2032 batteries are NOT interchangeable with the regular version. They are meant to be used in very low current devices that have a solar cell charger incorporated into the unit.

I'll have to use 2032 batteries with glucometer, which uses 3 volts. Is it safe to use rechargables with 3.6 voltage in that device?

These instruments are very specialized and therefore fragile. The electronics in the units are set to use a specific battery (voltage). By using a 3.6 volt battery instead of the 3 volt battery provided is adding more than a half volt more to the system. The 3.6 volt might work for a while, but will probably cause the tiny component parts to overheat and wear out faster. Improper voltage could result in incorrect readings. Use the correct battery please.

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🔋 Power up smarter, save greener — never settle for disposable!

LONG LASTING CHARGE - Low self-discharge keeps your batteries ready even after months of storage.
SAFETY FIRST ALWAYS - Built-in protections against overcharge, overheating, and short circuits.
ENDLESS POWER RELOADED - Recharge up to 500 times and never run out during critical moments.
PLUG PLAY COMPATIBILITY - Perfect drop-in replacement for CR2032 in car keys, remotes, and trackers.
SMART SAVINGS SMART CHOICE - Cut down on waste and expenses with rechargeable, eco-conscious tech.

These rechargeable 3.6V LIR2032 lithium button batteries deliver 40-50mAh capacity with up to 500 recharge cycles. Designed as a direct replacement for CR2032 batteries, they fit car key fobs, fitness trackers, calculators, and other low-drain devices. Featuring advanced safety mechanisms and low self-discharge, they offer a cost-effective, eco-friendly alternative to single-use coin cells.