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The 5kWh class is the world’s highest-volume home battery size — and the 51.2V 100Ah (5.12kWh) LiFePO4 battery is its standard-bearer. Built as 16S1P from sixteen 100Ah prismatic cells, it is the entry point for residential solar storage, the starter SKU for distributors, and a configuration with documented import shipments to Southeast Asia. This page covers the engineering, the buying logic, inverter pairings, and wholesale/OEM sourcing.
Specifications
| Parameter | Value |
|---|---|
| Nominal voltage | 51.2V (16S) |
| Capacity | 100Ah |
| Energy | 5.12kWh |
| Cell architecture | 16S1P — 16 × 100Ah Grade A prismatic cells (e.g., EVE LF100LA class) |
| Charge voltage | 58.4V typical (3.65V/cell) |
| BMS | 100A typical; CAN/RS485 + Bluetooth options |
| Enclosure | Wall-mount (standard) / 19″ rack options |
| Parallel expansion | Up to 16 units (per BMS) — 80kWh+ |
| Documentation | UN38.3, MSDS, specification sheet per project |
Why 16S1P: the Simplest Reliable Architecture
Sixteen cells in series, one string — no parallel cell groups. That simplicity is the point:
- Matching is straightforward: 16 cells to match, not 32. Voltage and internal-resistance sorting at build time is simpler and more verifiable than 2P architectures.
- Diagnostics are clean: one cell per series position means the BMS sees every cell directly — no parallel-pair masking of a weak cell.
- Cell supply is deep: 100Ah-class prismatic cells are among the highest-volume LiFePO4 cells ever made — competitive pricing and mature quality control.
- One cell, three rungs: the same 100Ah cell builds the 5.12kWh (16S1P), 10.24kWh (16S2P), and 15.36kWh (16S3P) models — a true product family.
Who Buys It: the Entry and the Starter SKU
- First-time solar homes: as a lithium battery for home solar storage, 5.12kWh covers evening loads for apartments and small homes with a 3–5kW hybrid inverter — the lowest-cost entry into 51.2V storage.
- Distributors: the starter SKU for new dealer channels. Lower unit price means faster turns and lower stocking risk; customers expand by paralleling identical units. See our Vietnam sourcing guide for how this size moves in Southeast Asia.
- Entry markets (Africa/SEA): the affordable answer for urban backup — evening loads, short outages, starter solar systems. See our Kenya guide.
- Rebate and program markets: the 5kWh size is the standard modular increment — buyers start with one and add units as needs grow.
The 51.2V Family Ladder
This model is the entry rung of a one-platform family:
| Model | Architecture | Energy | Position |
|---|---|---|---|
| 51.2V 100Ah | 16S1P (100Ah cells) | 5.12kWh | Entry — starter SKU, fastest turns |
| 51.2V 200Ah | 16S2P (100Ah cells) | 10.24kWh | Volume — standard family home (200Ah page) |
| 51.2V 280Ah | 16S1P (280Ah cells) | 14.34kWh | Cost-optimized — 280Ah page |
| 51.2V 314Ah | 16S1P (314Ah cells) | 16.08kWh | Flagship — 314Ah page |
Same 51.2V system voltage, same communication protocols, same installer training across all four. See the full 51.2V battery series.
Inverter Compatibility
Ships with BMS firmware configured for your inverter — Deye, Growatt, GoodWe, Sunsynk-class, Victron-compatible, and similar hybrid inverters via CAN/RS485. Closed-loop communication is preferred for accurate SOC; voltage-mode fallback where unsupported. Provide your inverter model with the order — see our BMS selection guide.
Wholesale and OEM/ODM
The 51.2V 100Ah is the fastest-turning SKU in the 51.2V family for distribution: lowest unit price, simplest 16S1P architecture, wall-mount standard with rack options, private-label available. Distributors typically open a new market with this model and add 200Ah/280Ah/314Ah as demand develops — same voltage platform, same support process.
Specifications, pricing, MOQ, and lead times are confirmed per project. Contact us with your target enclosure, inverter pairings, and volume for a quotation.
Frequently Asked Questions
Why start with 100Ah instead of 200Ah?
Lower unit price, faster inventory turns, and simpler 16S1P architecture. Customers expand by paralleling identical units — the 100Ah is the on-ramp to the whole 51.2V family.
Can I parallel 100Ah with 200Ah units?
No — parallel units must match in model, capacity, and age. Size the bank with one model; expand later with identical units.
Is 5.12kWh enough for a home?
For apartments and small homes covering evening loads — yes, with a 3–5kW hybrid inverter. Standard family homes typically step up to the 10.24kWh model or parallel two 100Ah units.
Which inverters are compatible?
With matched CAN/RS485 firmware: Deye, Growatt, GoodWe, Sunsynk-class, Victron-compatible, and similar. Provide your inverter model with the order.
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