Zendure SolarFlow AB1000 Add-on Battery (1kWh Stackable, IP65, 10-Year Warranty)

Added this AB1000 to my existing hub in under ten minutes. It snapped right into place, the app recognized it instantly, and my balcony storage went from 1kWh to 2kWh. Rained all week and the IP65 rating proved itself. Couldn't be happier.

I was hesitant about add-on batteries, worried they'd be some cheap afterthought. This is the same solid build quality as the main unit. Stacking was literally plug and play. My fridge stays powered through the night now without draining the base unit. Ten-year warranty makes it a no-brainer.

The battery itself is excellent — heavy, well-sealed, clearly weatherproof. Getting it paired in the app took two attempts, but once connected everything works flawlessly. Capacity report matches real-world output closely. Would buy another.

Stacked perfectly, no issues. Great add-on.

The unit works fine and integrates well with my SolarFlow system. However the box arrived dented, which was stressful for a battery purchase. Battery itself tested fine and holds charge as advertised. Three stars mainly for the shipping anxiety.

At 67 I didn't want a complicated installation, and this wasn't one. My grandson helped me stack it in fifteen minutes, most of that just deciding where to put it. It sits outside year-round, through frost and summer heat, and hasn't skipped a beat. The ten-year warranty was the deciding factor for me — at my age I want things that last. Highly recommend for anyone on a fixed income trying to trim the electric bill.

Doubled my storage for well under what competitors charge. Only minor gripe: it adds noticeable weight, so plan your mounting spot. Otherwise seamless.

No gimmicks, no surprises. IP65 casing looks genuinely robust, stacking hardware feels premium, and the pass-through charging keeps my base unit topped up. My whole apartment balcony system now covers most of my daytime usage. Ordering a second one.

Disappointed. Out of the box the battery showed 30% and never balanced properly with my existing stack — the app kept reporting a mismatch. Zendure support was responsive and is sending a replacement, so I'm hopeful, but the first unit clearly had an issue. Docking two stars until the replacement proves itself.

The modularity is the whole selling point and it delivers. Added this a month after my original setup with zero reconfiguration needed. Silent, cool-running, and the monitoring dashboard breaks down each module's contribution so you can actually see it working.