ER series lithium-ion batteries are commonly used in electronic instruments, smoke alarms, water meters, and precision instruments due to their high voltage (3.7V), large capacity, low self-discharge, and stable discharge for a long time.
ER26500 3.6V lithium battery can be used in Water Meter
ER26500 3.6V lithium battery can be used in Electric meter
ER26500 3.6V lithium battery can be used in Smoke detector