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Sony MDR-RF810, MDR-RF840, MDR-RF850, MDR-RF860, MDR-RF925, MDR-RF960, MDR-RFR970, MDR-RF4000, BP-HP550-11 Wireless Headset Batteries

There are two versions of this battery, one with a notched back and one flat accross. Confirm the style of your original battery as shown.

Outline Type Part # Price Order
BP-HP550-11 Replacement Battery CS-SRF860SL NiMH


BP-HP800-11 Replacement Battery CS-SRF955SL NiMH


The above batteries will have different model numbers on the product pages since they are after market replacement batteries which are as good or better than the originals.  The current or mAh (milliamp hour) rating of a battery is an indication of the battery capacity or how long it will last on a charge, the higher the better.

There is a $7 Cdn ($5.60US) shipping and handling charge.
90 day warranty and no questions asked 1 month return policy.