Best battery for energy storage cabinet

Many options exist with multiple battery chemistries available for home energy storage. The bottom line, however, is that in the United States, two brands dominate the space. More than 90% of the market is served by LG Chem and Tesla Powerwall, which are lithium-ion batteries, according to LBL. Tesla controls more than 60% of the entire market.

Because home battery storage has something to offer everyone—from backup power to bill savings to self-reliance. With this in mind, there is no single “best” battery. There are different solutions to meet the varying requirements and needs of homeowners across the country.

The leading inverter company, not surprisingly, offers a fantastic home battery storage solution in the Enphase IQ Battery 5P. This smaller capacity battery comes in at a lower price point than larger capacity competitors, and can often get the job done in Time-of-Use shifting applications for bill savings.

The next thing to consider is the composition of the battery. Every battery on our list is either lithium-ion or lithium iron phosphate (LFP). While similar, the differences are noteworthy. LFP batteries typically have longer lifespans and increased thermal stability (aka less heat and fire risk).

Existing solar systems typically have solar inverters, which change the DC power produced by panels to AC power that can be consumed in your home or exported onto the grid. But if you want to store that AC power in a battery, it needs to be inverted again to DC power.

So, consumption-only batteries enable all of the bill savings of a traditional backup battery at around 75% of the upfront cost – which can be well worth it for homeowners who aren't concerned with grid outages. Most batteries feature two numbers that represent their capacity to provide power.