Xirsix, LLC · Technical datasheet
G1 12V LTO Battery Module
A 12V-class 6S1P lithium titanate (LTO) module with an integrated 5 A active balancer, M12 brushed-aluminum terminals and a PETG enclosure.
Variants
- XIR-G1-12V-40AH: 40 Ah
- XIR-G1-12V-45AH: 45 Ah (not yet available)
Electrical
| Configuration | 6S1P — Six LTO cells in series |
|---|---|
| Rated Capacity | 40 Ah — At 25 °C, standard discharge |
| Energy | 500 Wh — Conservative rating |
| Nominal Voltage | 13.8 V — 6 × 2.3 V per cell |
| Ideal Operating Range | 11–15 V — Best performance and longevity |
| Maximum Voltage | 17.4 V — 6 × 2.9 V charge cut-off. Do not exceed. |
| Minimum Voltage | 9.0 V — 6 × 1.5 V discharge cut-off. Do not go below. |
| Continuous Charge / Discharge | 240 A (6C) — Per module design rating. Monitor temperature. |
| Peak / Pulse | ~10C for 10 s |
| Internal Resistance | ≤ ~4–5 mΩ — Approximate, module |
| Balancing | 5 A active capacitive — Integrated; equalizes cells automatically |
| Built-In Protection | None, by design (no traditional BMS) — A BMS's switches and shunts would add resistance and cap current. Use external fusing and stay within 9.0–17.4 V. |
Life
| Cycle Life | ~25,000 cycles — To ≥ 80% capacity, standard test conditions |
|---|---|
| Calendar Life | Up to 25 years — With proper care (SOC, temperature, minimal abuse) |
Charging
| Compatible Chargers | Standard 12 V lead-acid or Li-ion — May not reach full 17.4 V; normal and safe |
|---|---|
| Recommended Charge Voltage | ~14.4–15.0 V — Avoid constant high-voltage float |
| Alternators | Standard 12 V automotive — Fully compatible |
Environment
| Operating Temperature | −40 to +65 °C — Cell spec; ≤ 1C below 0 °C; cool above 35–40 °C |
|---|---|
| Water Resistance | Water-resistant, not waterproof — Splash and light rain; no submersion or pressure washing |
| Enclosure Temperature | ~60–70 °C continuous — PETG softens near 75–85 °C |
Mechanical
| Dimensions | 10 × 6.5 × 9 in — ~254 × 165 × 229 mm (DERIVED) |
|---|---|
| Weight | 22 lb (~10.0 kg) |
| Enclosure | PETG housing — Impact- and chemical-resistant, serviceable. White sleeve, black caps and base. |
| Terminals | M12 × 1.75 posts, brushed aluminum — Nord-Lock washers and automotive post adapters included |
| Terminal Torque | 10 Nm max — Do not exceed; use a calibrated torque wrench |
Shipping and warranty
| Shipping Class | UN3480, Class 9 — Lithium-ion batteries; ground shipping |
|---|---|
| Warranty | 20-year limited — Repair or replace; see warranty for terms |
No traditional BMS, by design: its switches and shunts would add resistance and cap current. The 5 A active balancer keeps cells matched; protection is system-level (properly sized cable, external fusing), and users must keep module voltage within 9.0–17.4 V. Specifications per XIR-DS-MOD6S40-001 Rev A and XIR-IG-MOD6S40-001 Rev B; subject to change.