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Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
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Description
Efest IMR 21700 3700mah 35A Battery - 2 PackEfest IMR 21700 3700mah 35A Battery 2 Pack The Efest 21700 3700mah 35A Battery is a powerful Li Mn rechargeable battery. Specifications: Nominal voltage: 3. 7V Voltage at the end of discharging: 2. 5V Max charging current: 4A Standard charge: 2A Discharging current: 35A Charging temperature range: 0C 45C Discharging temperature range: 20C 75C
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 468 reviews
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Product Reviews
★★★★★ 5
great set
Color: Silver, Size: Rechargeable
Love this. it's been holding up well and haven't had any issues with it at all. Charge holds a while.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Beautiful set
Color: Silver, Size: Rechargeable
So far love this set. It was a gift for my boyfriend and he loves it. The look is perfect, and so far functions as expected. Also the charge has lasted for months so far.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Great product
Color: Silver, Size: Rechargeable
No more batteries dead when you need it most! Love them
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Reviewed in the United States on March 18, 2026
★★★★★ 5
Better than most
Color: Silver, Size: Rechargeable
Very awesome. Works better than expected. Very easy to use and refill when it runs out. Highly recommend!
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Reviewed in the United States on February 27, 2026
★★★★★ 5
Very good quality
Color: Silver, Size: Rechargeable
There very nice. Battery is very durable.
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Reviewed in the United States on March 2, 2026
