Description
Efest 21700 5000mAh 10A Battery – Single Battery
SPECIFICATIONS:
- Style: Flat Top
- Chemistry: IMR
- Nominal capacity: 5000mAh (Max)
- Max Continuous Rated Discharge: 10A
- Dimensions: 70.20 mm (Max) x 21.50 mm (Max)
- Weight: 87.0g (Max)
- Discharge Cut-off Voltage: 2.5V
- Nominal voltage: 3.6~3.7V
- Full Charge Voltage: 4.2V ± 0.05V
- Protected: No, Unprotected
- Cycle info: Capacity drops to 80% after 600 full charge/discharge Cycles
- Standard Charge: Constant Current 1000mA, Constant Voltage 4.20V, & Cut-Off 50mA
- Operational Charging Temperature Range: 0 to 45 degrees Celsius (best below 45 degrees Celsius)
- Operational Discharging Temperature Range: -10 to 60 degrees Celsius (best below 60 degrees Celsius)
Note: If using a mechanical mods, know the amperage limit of your battery, don’t out too much of strain on it.
- Batteries with torn wrapper need to be replaced.
- Don’t leave your batteries in your car.
- Don’t keep your batteries on your pocket with loose change or keys.
- Do keep your batteries in approved batteries case when not in use.
- Keep your battery charger in a place where you can keep your eye on it.
- Excessive heat (over 80F) and cold(less than 40F) are bad for batteries.
- Battery eventually wear out, and need to be replaced every 3-6 moths, depending on use and battery quality
Important reminders:
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Don’t use with device that does not have BMS or PCB protection.
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Don’t store loose in your pocket, backpack, purse, or etc. Always use a case or box for storage or to carry with you.
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When not in use, always store your battery in a case or box in which battery were delivered with.
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Misusing or mishandling Li-ion battery can cause a serious risk of personal injury or property damage.
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If misused or mishandled, the battery may explode, burn, or case a fire.
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Usage of battery is at your own risk!
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Only use with proper protection circuitry.
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Don’t short circuit intentionally or unintentionally.
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Stay away from metal or conductive objects to prevent short circuiting.
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Don’t use the battery if battery’s wrapper or terminal insulator is damaged or torn.
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Don’t use if battery is showing any visible damage.
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Don’t over-charged or charged battery above the maximum voltage rating.
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Don’t over-discharged or exceed battery above the continuous discharge rating.
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Don’t modify, disassemble, puncture, cut, crush, or incinerate the battery.
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Don’t expose the battery to liquids or high temperatures.
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Don’t use force to install the battery in any way.
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Only use the battery within manufacturer’s specification.
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Store the battery at a safe place where the pet/child can’t reach.
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Always charge the battery in or on a fire-proof surface and never leave battery charging unattended.
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Only use a proper smart charger to charge the battery.
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Please fully charged the battery before first use. The charging time may vary, depends on the charger you have (may need from 4 to 12 hours). If your charger has a capacity indicator, it is normal that the first bar or first 20% to 25% would take the longest time to be charged.
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Always use the batteries that are same brand, same model, and same condition. Don’t mix and match with other batteries.
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Immediately stop using the battery if any abnormal appearance occurs.
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It is your responsibility to make sure that your charger or device is functional.
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If exposed to battery electrolyte, flush with water immediately and/or immediately contact a physician or emergency services.
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Don’t throw away in trash; please properly recycle or dispose the battery.
WARNING:
- Misusing or mishandling lithium ion batteries can pose a SERIOUS RISK of personal injury, property damage, or death
- BATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED
- ONLY use with proper protection circuitry
- ONLY use within manufacturer specification
- DO NOT store loose in pocket, purse, etc. – always use a protective case
- KEEP AWAY from metal objects to prevent short circuiting
- DO NOT short circuit
- DO NOT use if wrapper or insulator is damaged or torn
- DO NOT use if damaged in any way
- DO NOT overcharge or over-discharge
- DO NOT modify, disassemble, puncture, cut, crush, or incinerate
- DO NOT expose to liquids or high temperatures
- DO NOT solder
- User must be familiar with handling lithium ion batteries before purchase
- Usage of batteries is AT YOUR OWN RISK