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Ships within 48 hours · Estimated delivery Jun 16 - Jun 21
For Your Every Summer RSVP, with Code: SUMMER15
Description
ProMariner Battery Isolator - 2 Alternator - 3 Battery - 70 AMP [12073]Battery Isolator 2 Alternator 3 Battery 70 AMP ProMariner Battery Isolators with gold plated terminals and improved efficiency, provide enhanced charging. Rated for use with DC devices ranging from 10 amps to 70 amps. Owner's Manual (pdf)
![ProMariner Battery Isolator - 2 Alternator - 3 Battery - 70 AMP [12073] ProMariner Battery Isolator - 2 Alternator - 3 Battery - 70 AMP [12073]](https://cdn.shopify.com/s/files/1/0611/7297/3739/files/102172XL.jpg?v=1700000645)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1813 reviews
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Product Reviews
★★★★★ 4
Good quality one for a good Price.
Style: Usb
Good quality one for a good Price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2025
★★★★★ 5
Warmer hands
Style: Usb
I have these on three bikes, they work great!
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Reviewed in the United States on November 8, 2025
★★★★★ 2
El calor que emite no es suficiente
Style: Usb
El calor que emite no es suficiente para enfrentar temperaturas de menos 38 F°.
Salí en mi motocicleta y los probé y no sirvieron de nada. No lograron calentar mis manos. Obviamente usaba guantes y el nunca penetraron el material del guante. La temperatura era de 38 grados y llevaba protectores de puños para evitar el golpe del viento directamente.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Hand warmers
Style: Usb
Work good not powerful but work ok for cold days on bike ,only usb plugin
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Reviewed in the United States on October 20, 2025
★★★★★ 1
Plug them in and tried them out before installing
Style: Usb
I have them on and when I put it on blue or white thet will automatically shut off I have to keep it on red or green for them to stay on easy to install for sure but not sure if I just got a bad one they seem pretty good I have friends that have them it's just this pair here not working the best
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Reviewed in the United States on January 1, 2026
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