Solar Battery Bank Direct From Factory

Match voltage to your inverter ecosystem. 12V works with PWM controllers and small MPPT units common in African and Southeast Asian solar home systems. 24V fits mid-range MPPT controllers and reduces cable losses on systems up to 3–5kW. 48V is standard for European/Australian residential hybrid inverters and all commercial systems — lower current means thinner cables, lower losses, and higher system efficiency.

If you're building inventory for multiple markets, carry 12V for replacement demand and 48V for growth markets.

Depends on the application and your customer's budget. LiFePO4 delivers 4–6x the cycle life at deeper discharge — better total cost of ownership for daily-cycling systems. Gel and AGM cost less upfront, need no BMS, and work well for pure backup or low-cycle applications.

For your catalog strategy: LiFePO4 carries higher margin per unit; gel/AGM carries higher volume in price-sensitive markets. Most distributors profit from stocking both.

Start with daily energy consumption (kWh) divided by usable depth of discharge. For a LiFePO4 bank at 80% DOD: a 5kWh daily load needs approximately 6.25kWh of rated capacity (5 ÷ 0.8). For gel at 50% DOD: the same load needs 10kWh rated.

Then factor in autonomy days — how many days of backup your customer expects without solar input. Most off-grid residential systems size for 1–3 days of autonomy. Telecom sites typically require 8–72 hours depending on operator specifications.

Three root causes: cell mismatch within packs (capacity drift creates thermal imbalance), mismatched packs in a string (one pack hits cutoff while others have remaining capacity), and BMS thresholds that don't match the actual duty cycle.

Prevention starts at production — tight cell sorting, matched pack sets for series strings, and application-specific BMS programming. We address all three in our standard production process.

Yes, with caveats. The charge profile is different — LiFePO4 requires a compatible charge controller or inverter with a lithium charge algorithm. Voltage ranges differ slightly (51.2V nominal for LiFePO4 vs 48V nominal for lead-acid).

If your customer's inverter supports lithium settings, it's typically a direct physical replacement. If not, the charge controller needs updating. We can configure BMS communication to match specific inverter brands, which simplifies the transition for your installer customers.

Minimum for most markets: UN38.3 transport test summary (mandatory for lithium air and sea freight), MSDS, and proper DG shipping declarations. CE is required for European market access. IEC 62133 is increasingly required by European importers and some Southeast Asian markets. We maintain all of these for standard models.

For market-specific certifications (CEC for Australia, NRCS for South Africa, SASO for Middle East), our engineering team supports the application process.

Standard catalog models: 100 units minimum. OEM/ODM configurations: depends on engineering complexity. A branding change on existing tooling runs at similar volume to standard. A custom cell configuration with new BMS firmware needs higher volume to justify validation — we quote the threshold upfront.

Most new buyers start with a standard model trial order, then move to OEM customization after confirming market fit.