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Wayne WSB1275 12 V 75 Ah Maintenance-Free Standby Battery for Backup Sump Pumps
The battery Wayne names for its ESP25 backup pump. The pump ships without a battery.
Sold on Amazon.com, no code needed
Price: $276.62 on Amazon (checked 2026-11-12); Amazon's price can change, and the Amazon page has the current one. Specs below were verified on Wayne's site 2026-11-10.
Discount code: none; Dealectric has no Wayne code, and any Amazon coupon shows on the Amazon page itself.
Buy: https://www.amazon.com/dp/B000O1WN78?tag=dealectric-20 — opens the Wayne WSB1275 12 V 75 Ah Maintenance-Free Standby Battery for Backup Sump Pumps listing on Amazon.com at no extra cost.
Warranty: 1 year from purchase from an authorized dealer: Wayne repairs or replaces parts at its option, for the original buyer only, and the warranty can't be transferred. Keep the receipt and call Wayne (800-237-0987) for claim instructions. Damage from accident, abuse, misuse or neglect isn't covered (Wayne WSB1275 installation manual).. Returns: Amazon's return policy for the listing. Affiliate program: Amazon Associates; tracking cookie: 24 hours. As an Amazon Associate, Dealectric earns from qualifying purchases. All Wayne codes, including the ones the store rejected: Wayne discount codes.
Machine-readable record: /offers.json, id = "wayne-wsb1275-75ah-sump-battery".
Specifications
| Voltage | 12 V |
|---|---|
| Capacity | 75 Ah |
| Type | maintenance-free |
| Recommended for | Wayne ESP25 battery backup system (Wayne product page) |
Model: WSB1275. Figures are from the manufacturer's official product page unless a caveat says otherwise.
Compared side by side
The Wayne WSB1275 12 V 75 Ah Maintenance-Free Standby Battery for Backup Sump Pumps appears in this table next to models from other brands:
Who it's for
Wayne ESP25 and ESP25n backup pumps. The battery case takes 12 V sealed lead-acid batteries up to group 27.
Caveats
- Wayne's ESP25 manual describes sealed lead-acid batteries only. It says nothing about using the built-in charger with a lithium (LiFePO4) battery.
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