
IceCap Battery Backup v3.0
IC-BB3
The IceCap Battery Backup v3.0 keeps aquarium pumps running during power outages, powering one or two DC flow pumps simultaneously to protect fish and corals. It has a 2.5Ah battery...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.

The IceCap Battery Backup v3.0 keeps aquarium pumps running during power outages, powering one or two DC flow pumps simultaneously to protect fish and corals. It has a 2.5Ah battery and is compatible with most 12-24V DC pumps from brands such as Maxspect, IceCap, and Reef Octopus, and is compatible with the IceCap WiFi Dual Pump Controller. Two units can be linked for extended runtime.
Build around the IceCap Battery Backup v3.0.
It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.
Pick the right one, not the biggest one
The honest line-up from power & safety. Most buyers reading this page should buy the middle column.
Asked before checkout
The questions our support inbox actually gets.
Does it ship quickly?+
Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.
What if it's the wrong fit for my tank?+
Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.
Who handles the warranty?+
We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.
How does the bundle discount work?+
Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.

AutoAqua Leak Stop Sensor
IceCap Battery Backup v3.0
Battery Backup