Rechargeable NiMH AAA batteries typically hold a full charge for about 2 years. After that, they gradually lose stored energy and will not last as long. If the headset no longer charges properly, replace the batteries with fresh NiMH AAA batteries (600–900 mAh).
How to replace the batteries
- Turn off the headset.
- Open the battery compartment.
- Remove the old batteries.
- Insert new NiMH AAA batteries with the flat side facing the spring.
- Close the compartment and charge as usual.
Tips
- Do not mix old and new batteries.
- Keep batteries dry and at a cool, stable temperature.
- Recycle old batteries properly.