12V 7Ah IP67 Waterproof LiFePO4 Lithium Battery

No. The 12V 7Ah LiFePO4 battery is intended for compatible deep-cycle and backup-power applications, not engine starting.

Use a LiFePO4-compatible charger with a 14.4–14.6 V charging profile. Keep the charging current at or below the published maximum of 3.5 A for this model.

Yes, when configured according to the product instructions. The manual supports up to four batteries in series and four in parallel for this model; use matching batteries, keep the voltage difference at or below 0.3 V before connection, and do not exceed the specified current or protection limits.

The published range is 0–50 °C while charging, −20–60 °C while discharging, and 0–45 °C for storage. Do not charge below 0 °C unless an approved low-temperature charging mode is explicitly provided.

This model uses a T2 terminal and measures approximately 150 × 70 × 100 (L × W × H). Its published cycle-life figure is 5000+ cycles under the stated test conditions; actual service life depends on use and operating conditions.