This is a replacement rechargeable battery pack for Dogtra 1900S and 1902S series dog training receivers, plus the 3500X and 3502X. It is a 7.4V 400mAh pack that drops into the receiver the same way the original does, so a receiver that no longer holds a charge can go back into service instead of being replaced. It fits a specific list of models, so check your receiver's model number before ordering. Buyers rate it highly, and the main thing to get right is compatibility.
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Buyers rate it 5 out of 5 across 24 ratings. The common thread is that it restores a receiver that had stopped holding a charge, and that it fits the listed models as expected.
This is a replacement battery for 1900S series receivers. It is rated at 7.4V and 400mA.
It fits the 1900S, 1900S Black Edition B&L, 1900S Handsfree Plus B&L, 1900S Wetlands B&L, 1902S, 1902S Handsfree Plus B&L, 3500X and 3502X receivers.