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.
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ER26500 3.6V lithium battery can be used in Water Meter
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ER26500 3.6V lithium battery can be used in Electric meter
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ER26500 3.6V lithium battery can be used in Smoke detector