Description
The Starmax High-Temperature GEL Deep Cycle AGM Battery is a high-performance deep cycle GEL AGM battery designed for solar power systems, off-grid energy storage, wind power applications, sweepers, golf carts, and light industrial electric vehicles. Built for extreme temperatures (-15°C to 60°C), it features low self-discharge (2–3% per month at 25°C), a 50% DOD cycle life of over 3,000 cycles, and a float service life of 12–15 years. Supports fast charging and comes with CE, UL, ISO, and IEC certifications. Available in a grey body with black cover, it offers 1–3 years warranty depending on application, providing reliable, long-lasting power for industrial and renewable energy applications.
| Starmax SHTL12-24 — 12V 24Ah High-Temperature GEL / Deep Cycle (spec sheet) | |
|---|---|
| Manufacturer / Model | Starmax — SHTL12-24 (listed/marketed as 12V 24Ah HT GEL deep-cycle) — technical data referenced from CSPower HTL12-24 |
| Battery type | Sealed Gel (VRLA) — High-temperature deep-cycle GEL (VRLA/AGM family) |
| Nominal voltage | 12 V (6 cells) |
| Nominal capacity | 24 Ah @ 20-hour rate (21.0 A, 5.4 V end-point) — (10-hr = 22 Ah; 5-hr = 19 Ah; 1-hr ≈ 14.7 Ah) |
| Internal resistance (fully charged, 25°C) | ≤ 12.0 mΩ |
| Max. discharge current | 144 A (5 s short-term pulse) |
| Recommended charging (25°C) |
Standby/Float: 13.6 – 13.8 V (initial charge current < 5.4 A) Cycle charging: 14.6 – 14.9 V (initial charge current < 5.4 A) |
| Self-discharge | ≈ 3% / month @ 25°C |
| Operating temperature | Discharge / Charge / Storage: −25°C to +60°C (noting capacity reduction at low temp) |
| Capacity vs temperature (10-hr) | 40°C ≈ 108% | 25°C = 100% | 0°C ≈ 90% | −15°C ≈ 70% |
| Cycle life & Depth of Discharge | ~1,750 cycles @ 50% DOD (HTL series reference) |
| Design floating service life | 15 years @ 25°C (design float life, HTL series) |
| Dimensions (L × W × H) | 166 ±1 mm × 175 ±1 mm × 126 ±1 mm (total height 126 ±1 mm) |
| Weight | ≈ 8.4 kg (±3%) |
| Terminal / Bolt | T2 terminal — M6 × 14 bolt (typical for this model) |
| Certifications & standards | CE, UL (where applicable), ISO (manufacturer declares CE/UL/ISO/IEC on HTL series) |
| Warranty (manufacturer) | Typical: 3 years (manufacturer HTL series reference for high-temp models; confirm with vendor) |
| Typical applications | Solar / off-grid energy storage, UPS/backup systems, telecom, electric motive (sweepers, forklifts), harsh/high-temp environments |
| Notes / remarks |
• Data above primarily taken from CSPower HTL12-24 technical page (HTL series high-temperature GEL). • Some Starmax retail listings show 12V 24Ah gel deep cycle batteries (model naming varies: STG12-24 / SHTL12-24). Verify exact Starmax spec sheet with your supplier before publishing. :contentReference[oaicite:1]{index=1} |
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