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Battery compatible with Realwear B21G battery (not an original REALWEAR battery).
Battery for REALWEAR B21G Rechargeable Li-ion battery replica with 3.87V and 2600mAh/10Wh capacity.
The high quality replica battery with 2600mAh/10Wh capacity, Lithium-Ion Batteries. It fits in the Realwear B21G models.
Usually the installation of this battery in connection with the phone requires extra hands-on skills, we recommend that you have the Realwear B21G battery installed by an expert.
This battery is suitable as a replacement battery for Realwear B21G battery and REALWEAR B21G model.
High capacity REALWEAR B21G battery for longer standby time.
The battery is professionally tested to ensure the best lifespan.
1 year warranty, 30 days money back, 100% brand new!
Battery capacity (mAh/A/W) may be different; the more mAh/A/W it displays, the higher its autonomy.
Safety certified CE / FCC / RoHS.
* Please make sure that the replacement battery you are buying is suitable for your device brand and model.

REALWEAR B21G Battery Technical Specifications | 3 |
| Model |
B21G |
| Battery Condition |
Brand New Replacement Battery |
| Item Code |
22KK266_Oth |
| Category |
Lithium-Ion Batteries |
| Brand |
REALWEAR |
| Capacity |
2600mAh/10Wh |
| Voltage |
3.87V |
| Type |
Rechargeable Li-ion |
| Color |
Black |
| Applies to |
Realwear B21G |
| Certification |
Passed CE, UL, ROHS, ISO 9001/9002 and GS certification |
| Service |
Buy now, we promise a one-year warranty and 30-day returns |
Replacement Part Numbers:
Compatible Models:
For Realwear B21G
More B21G From Other Stores:
Battery For B21G
REALWEAR B21G Battery Our Guarantee
-- 30 days money back, 12 months warranty.
-- 30% off and free shipping
-- 100% compatible Realwear B21G
Product Features:
✅ 100% compatible with original equipment — easy installation and stable performance.
✅ Built-in overvoltage protection circuit to prevent damage to your device.
✅ Strictly tested during production to ensure top performance and reliability.
✅ Perfect replacement for the original part — same fit, same function.
Why order batteries from us?
① Expert in the field of batteries for 15 years.
② Large selection, almost all available products are in stock.
③ Tested and checked by competent professionals, careful packaging.
④ Best prices & fast delivery & One year warranty & Safe purchase and payment.
⑤ Perfect after-sales service.