LFP as the standard chemistry
Lithium iron phosphate has become the default for new residential storage listings on thermal stability, and sourcing here is built around that chemistry with clear flags where an NMC alternative still applies.
Industries
Home Battery Backup
LFP home battery systems sourced by installers for backup and self-consumption jobs, sized to the load profile being quoted.
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Home Battery Backup
Source LFP home battery systems for backup and self-consumption installs. Wholesale residential storage sourcing built for installer crews on Sunhub.
How home battery systems are sourced
Sized by use case, not a flat default
Backup-focused systems and self-consumption-focused systems get sized differently against the same home's load data, and this guide separates that sizing logic instead of quoting one capacity for both.
Retrofit-ready AC-coupled options
Adding storage to an existing PV system usually means AC coupling, and listings here flag which battery and inverter combinations are qualified for that retrofit path.
Better battery quotes and retrofits
Quote the right capacity the first time
Backup and self-consumption sizing get calculated separately against actual load data.
Add storage to an existing system without a compatibility surprise
AC-coupled retrofit compatibility gets checked before the sale, not during commissioning.
FAQs
What battery chemistry do most residential installs use now?
Lithium iron phosphate, or LFP, has become the standard chemistry for residential storage. It offers strong cycle life, a wide safe operating range, and better thermal stability than older NMC lithium-ion, which matters in a home setting. Most current backup and self-consumption systems installers quote are LFP, and Sunhub's residential battery listings reflect that as the default.
How is a home battery sized for backup versus self-consumption?
Backup sizing works from the loads a homeowner wants to carry through an outage and for how long, so it's driven by critical load and desired runtime. Self-consumption sizing works from the daily solar surplus and evening usage, aiming to store excess production for later in the day. The two goals can point to different capacities, so size against the actual load profile being quoted rather than a flat default.
Can AC-coupled batteries be added to an existing residential PV system?
Yes, AC-coupled storage is the common retrofit path because it pairs with an existing PV inverter rather than replacing it. The battery has its own inverter and connects on the AC side, which usually avoids reworking the original array. Confirm the existing system's capacity, interconnection, and breaker space first, and Sunhub's retrofit-ready AC-coupled options are listed with that compatibility check in mind.
