Which is better for GPS tracking?

Product A. It is a complete GPS tracking collar for Garmin Alpha handhelds. Product B is only a battery and does no tracking.

Can I use the Dogtra battery in the Garmin collar?

No. They differ in voltage (7.2V vs 3.7V), chemistry (NiMH vs Li-ion) and fit. Use each part only in the device it was made for.

Is the refurbished TT15 Mini worth it without a warranty?

Only if the price is well below a new collar and you accept the risk. Garmin has ended TT15 Mini service, so a failure means no repair path.

How long does each last?

Product A's 1200mAh Li-ion pack should outlast a charge compared with Product B's 700mAh NiMH pack, but runtime depends on the device and settings. Neither listing gives a battery life figure.

What else do I need to buy with Product A?

A charging clip and a wall charger, both sold separately. The collar strap is included.

Does Product B fit my Dogtra collar?

Check that your model takes the BPRR pack at 7.2V and 700mAh with this connector. The listing does not name specific Dogtra models.

Battery Upgrade for Garmin T5 and TT15 Mini Tracking Dog Collars vs Dogtra BPRR Battery 7.2V 700mAh - Compatible Replacement

These are not competing versions of the same thing. Product A is a rebuilt Garmin TT15 Mini GPS tracking collar for the Alpha system, sold with no warranty because Garmin ended TT15 Mini service. Product B is a 7.2V NiMH replacement battery pack for Dogtra devices. Buy A if you run an Alpha handheld and need a working tracking collar; buy B only if you own a Dogtra unit that takes this pack. No prices were provided for either, so compare current store prices on each product page before deciding.

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