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popularBarmeethius posted Feb 11, 2026 11:57 PM
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popularBarmeethius posted Feb 11, 2026 11:57 PM

Woot: Mighty Max Battery 12 Volt 100 AH Rechargeable SLA AGM Battery - Free shipping w/ Prime $69.99

$70

$170

58% off
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Woot! is selling the Mighty Max Battery 12 Volt 100 AH Rechargeable SLA AGM Battery for $79.99 now $69.99. This battery is more of a Marine type battery. Great for a backup sump pump.

https://electronics.woot.com/offe...670a82b832
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Woot! is selling the Mighty Max Battery 12 Volt 100 AH Rechargeable SLA AGM Battery for $79.99 now $69.99. This battery is more of a Marine type battery. Great for a backup sump pump.

https://electronics.woot.com/offe...670a82b832

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Feb 12, 2026 05:07 AM
394 Posts
Joined Nov 2019
MaroonPocket778Feb 12, 2026 05:07 AM
394 Posts
Lifepo4 is better unless u need a ton of current
3
Feb 12, 2026 02:20 PM
224 Posts
Joined Dec 2004
jlp7tFeb 12, 2026 02:20 PM
224 Posts

Our community has rated this post as helpful. If you agree, why not thank jlp7t

Quote from MaroonPocket778 :
Lifepo4 is better unless u need a ton of current
Unless your use case is outside or in an unheated shed or crawlspace. You can't charge LiFePO4 below freezing.
1
Original Poster
Feb 12, 2026 03:35 PM
52 Posts
Joined Aug 2016
Barmeethius
Original Poster
Feb 12, 2026 03:35 PM
52 Posts
Quote from MaroonPocket778 :
Lifepo4 is better unless u need a ton of current
I agree but some back up sump controllers have chargers in them that only work for SLA batteries. Just depending on your use case.
1
Original Poster
Feb 13, 2026 10:16 PM
52 Posts
Joined Aug 2016
Barmeethius
Original Poster
Feb 13, 2026 10:16 PM
52 Posts
Price changed to $69.99.
Feb 15, 2026 09:14 PM
31 Posts
Joined Nov 2020
NaekuhFeb 15, 2026 09:14 PM
31 Posts
I'd go by caution on getting agm from woot. Agm have a shelf life, and woot is a surplus store. Batteries sold at surplus stores is to me like trying to get a spin on a lottery wheel. You honestly can't even trust Amazon directly for agms coming fresh and with low ohms.
Last edited by Naekuh February 15, 2026 at 02:16 PM.
Feb 16, 2026 12:27 AM
1,941 Posts
Joined Dec 2011
IveGotNothingFeb 16, 2026 12:27 AM
1,941 Posts
Quote from Naekuh :
I'd go by caution on getting agm from woot. Agm have a shelf life, and woot is a surplus store. Batteries sold at surplus stores is to me like trying to get a spin on a lottery wheel. You honestly can't even trust Amazon directly for agms coming fresh and with low ohms.
I agree. Is it worth saving $100 or risking thousands in what you're protecting.

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