Cameron Sino 450 270mAh 3.7V lithium-ion battery
Replacement lithium-ion battery for many Sennheiser wireless headsets, 270 mAh, 3.7 V, 38.40 x 30.70 x 6.60 mm, 9.0 g
- Replaces original Sennheiser BA-370PX battery for compatible headsets
- 270 mAh capacity delivers reliable wireless listening time
- 7 V lithium-ion chemistry matches factory specifications
- Compact 38.40 x 30.70 x 6.60 mm design fits inside earcup
- ISO9001, RoHS and CE certified for safety assurance
Replacement battery for Sennheiser headsets
This Cameron Sino lithium-ion cell replaces the original BA-370PX pack in a long list of Sennheiser wireless models including the MM 450, PXC 360 BT and 450 TRAVEL. It delivers 270 mAh at 3.7 V and weighs 9.0 g. The fully decoded chip communicates with the headset exactly like the factory unit. ISO 9001, RoHS and CE certifications are declared.
Who should buy this and who should not
Owners of the listed Sennheiser headsets whose batteries no longer hold a charge will restore full wireless runtime with this direct-fit cell. It is not suitable for headphones outside the compatibility list, for devices that require a different voltage or capacity, or for users who cannot open the earcup to reach the battery compartment.
Critical specification: 270 mAh capacity
The 270 mAh rating determines whether the cell matches the original runtime; a higher or lower figure would change listening time between charges. Verify the part number BA-370PX or 0121147748 on your old battery before ordering. Dimensions are 38.40 x 30.70 x 6.60 mm, so the replacement must fit the same internal space.
How it compares
Measured against everything we stock in Jump Starters, Chargers & Power Packs, at today’s prices. Recalculated every night.
- Price $15.99
- Pricier than about 55% of the 1,744 comparable items (median $14.99).
Specifications
| Product | |
|---|---|
| Brand name | Cameron Sino |
| Model name | 450 TRAVEL, 550 Travel, MM 400, MM 400-X, MM 450, MM 450-X, MM 500-X, MM 550, MM-550-X, PCX 360 BT, PX 210 BT, PX 310 BT, PX 360, PX 360 BT, PXC 310, PXC 310 BT, PXC 360 BT |
Questions about this item
When will the 270 mAh lithium-ion cell need replacing?
Expect replacement after the cell no longer holds a useful charge; a new pack reaches peak capacity after 2 or 3 full charge-discharge cycles.
What limits runtime during a long listening session?
The 1.00 Wh capacity sets the maximum playtime before the headset must be recharged.
How warm does the 3.7 V pack get when the headphones run all day?
Normal operation stays well below the 60 °C storage limit; avoid charging with low-quality adapters to prevent excess heat.
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