How to Charge Your B37S Massage GunUpdated 19 days ago
This guide explains how to charge your Ekrin B37S and check common connection problems.
The B37S uses its original Ekrin AC/DC wall adapter with a round barrel connector. The replacement adapter must match 26V DC, 900mA, center positive, 5.5mm outer / 2.1mm inner barrel plug. Do not choose an adapter simply because the plug fits.
For travel, check the input-voltage range on your adapter’s label and use a suitable mains plug adapter for your destination. A mains plug adapter does not change the charger’s DC output.
Charging steps
- Turn the device off before connecting power. Do not use it while charging.
- Connect the correct cable or adapter securely to the device and power source.
- Check the charging indicator using the manual for your exact model/generation. Indicator colors and sequences can differ.
- Disconnect the charger when charging is complete. Charge time varies with the power source, cable, and battery level.
If it will not charge
- First confirm the adapter and cable match the model and port described above.
- Check the cable, connector, and charging port for visible damage. Keep the port dry; do not insert tools into it.
- Try a different wall outlet.
- If there is still no charging response, or the battery will not hold a charge, contact support.
Battery care
Charge in a cool, dry place. Recharge before extended storage and periodically while unused. You do not need to deliberately drain the battery completely before recharging.
Use the manual for your model and generation for its charging indicators and operating instructions.
Replacement USB cable for Bantam, 365, Kestrel, and B37 v2. For B37 v1 or B37S adapters, contact support to confirm the correct replacement.
Still need help? Email [email protected] with your model, order number or receipt, issue description, and photos or video where possible. See warranty coverage and claim instructions. Do not open or attempt to repair the device yourself.