Description
The Starmax SFLC Fast-Charge Long-Life Lead Carbon Battery is a high-performance deep cycle lead carbon battery ideal for solar power systems, off-grid energy storage, wind power applications, sweepers, golf carts, and light industrial electric vehicles. Built for extreme temperatures (-20°C to 60°C), it features low self-discharge, over 3,000 cycles at 50% DOD, and a float service life of ≥20 years. ISO 9001/14001/18001 and CE/IEC certified, this lead carbon battery delivers reliable, long-lasting power for industrial and renewable energy applications.
| Specification | Details |
|---|---|
| Model | SFLC12‑20 |
| Chemistry | Lead Carbon Sealed Rechargeable Battery |
| Nominal Voltage | 12 V (6 cells per unit) |
| Nominal Capacity | 20 Ah @ 20 hr rate (1.00 A, 10.50 V) |
| Capacity @10 hr | ≈18.6 Ah @ (1.86 A, 10.8 V) |
| Capacity @5 hr | ≈17.0 Ah @ (3.40 A, 10.5 V) |
| Capacity @1 hr | ≈12.0 Ah @ (12.0 A, 9.60 V) |
| Internal Resistance | ≤ 13.5 mΩ (fully charged @ 25 °C) |
| Max. Discharge Current | 200 A (5 s) |
| Self‑Discharge | ≈3 % per month @ 25 °C |
| Design Floating Life | ≈20 years (design estimate @ 25 °C) |
| Cycle Life | ~2,000+ cycles @ 80 % DOD |
| Operating Temperature Range | Discharge: ‑30 °C ~ 60 °C Charge: ‑30 °C ~ 60 °C Storage: ‑30 °C ~ 60 °C |
| Charge (Standby Use) | Initial current ≤ 6 A; Voltage 13.6‑13.8 V |
| Charge (Cycle Use) | Initial current ≤ 6 A; Voltage 14.4‑14.7 V |
| Dimensions (L×W×H×Total) | 166 × 175 × 126 × 126 mm (approx.) |
| Weight | ~8.4 kg ± 3 % |
| Case Material | ABS (UL94‑V0 optional) |
| Terminal Type | T2 style / standard lead carbon terminal |
| Certifications | ISO9001/14001/18001, CE, IEC60896‑21/22, IEC61427 |
| Applications | Solar & wind energy storage, UPS systems, telecom, medical, EV golf carts, emergency systems, etc. |









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