"Solar battery" spans four orders of magnitude, and this page is the map. At the small end, a 12V gel or deep-cycle block stores a cabin’s nightly kilowatt-hour. In the middle, banks of 12V blocks or 2V OPzV/OPzS cells run off-grid homes and power houses. At the system end, 51.2V wall-mounted and rack-mounted storage units — 5.12 kWh modules upward — pair with hybrid inverters as complete energy storage products. XD Battery manufactures across all three scales, which matters when a project grows: the supplier who sold the cabin block also builds the power-house string.
One honesty note on angle: this page leads with the lead acid and storage-system answers, because they are the manufacturing core. Lithium packs for solar-adjacent duties (RV, low-speed vehicles, portable storage) exist elsewhere in the company catalogue; the storage systems here are the residential flagship line.
Scale decides chemistry placement
- Up to ~2 kWh daily cycling: 12V gel / deep-cycle blocks
- 2–20 kWh: block banks, or OPzV/OPzS 2V strings for long-life briefs
- Complete home storage: 51.2V wall/rack systems with inverter pairing
- Village and utility scale: 2V cell plants, designed per project
How long do solar batteries last?
By line: documented lead acid models carry three-year warranties; storage systems three to five. Calendar life in service depends on depth of discharge and temperature — the blog’s lifespan guide separates the chemistries honestly.
Can I add capacity later?
In blocks, only within the matched-age discipline — plan the bank for the grown system. In 51.2V storage, modular systems stack by design; that is their point.