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Oral-B 3731, 3738 Toothbrush Battery

The 42mm version of this battery is not available

Outline Model Type Capacity Price  Order
Oral-B 3731 Equivalent Battery CS-OBT400SL Ni-MH
49.8 x 17.30mm

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.
1 year warranty & no questions asked 1 month return policy.

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