Product Reviews

A battery charged straight from the grid has different sizing priorities than a solar-paired one. Here is what to check before buying one without solar.

Buy a smaller home battery now and add capacity later without replacing the system. Here are the expandable batteries worth looking at, and what to check first.

A 25-year warranty is only as good as the company behind it. Here is how Qcells, REC, Panasonic, and Maxeon compare on manufacturing and warranty backing in 2026.

Portable power stations top out around 6-7kWh and whole-home battery installs like the Tesla Powerwall start north of $12,000 installed. Sitting between those two tiers is a newer category: modular, expandable “power hub” systems that ship as a portable base unit but can grow into something close to whole-home backup by adding battery packs over

Anker’s SOLIX X1 is a modular, permanently installed home battery aimed at Tesla Powerwall 3. Here’s what it actually offers.

EcoFlow’s PowerOcean is a permanently installed hybrid battery system with a 15-year warranty and up to 45kWh of expandable capacity.

Sol-Ark 15K vs EG4 18kPV: price, power output, battery compatibility, permitting, and support compared for DIY and professional installs.

Anker’s SOLIX E10 launched in January 2026 as a direct Powerwall 3 competitor. Here is how the two systems actually compare on installers, warranty, and VPP eligibility.

Head-to-head comparison of Franklin aPower 2 and Tesla Powerwall 3 — capacity, output, warranty, solar integration, cost, and which one wins for your install.

Full review of the Sonnen home battery line in 2026 — sonnenCore Plus, Evo, chemistry, warranty, the sonnenConnect VPP, and how it stacks against Tesla, Enphase, and Franklin.