LF4070-9 12V 42Ah LiFePO4 Battery Pack
The LF4070-9 is a 12V 42Ah LiFePO4 pack, the largest of the small-to-mid 12V models with a full specification table. Its nominal voltage is 12.8V and its listed energy is 537.6Wh, in a plastic casing with an M6 terminal and an IP55 water and dust resistance rating.
- LiFePO4 packs in 12V, 24V and 48V
- 7 x 12V models with full spec tables
- Portable stations and hybrid NiMH fitments
- Certificates available upon request
No founding year, headcount, phone or named contact is published on this site: those records conflict between sources and are not settled. Contact goes through the inquiry form.
Listings for this model name UPS systems, solar and wind power systems, golf carts, electric vehicles, e-bikes, e-rickshaws and lighting as applications. Those are listed applications, not a performance guarantee for any single use: the table below is the specification evidence, and the buyer checklist at the foot of the page is the step that turns a listed specification into a confirmed order.
Generic illustration, not a photograph of any product.
Specification table (as listed)
| Nominal voltage | 12.8V |
|---|---|
| Capacity | 42Ah |
| Energy | 537.6Wh |
| Internal resistance | ≤50mΩ |
| Cycle life | 2000 cycles (0.2C to 70% capacity) |
| Self-discharge | ≤3.5%/month at 25℃ |
| Charging voltage | 14.0–14.6V |
| Charging current / max | 21A / 42A |
| Discharging current | 21A |
| Max continuous / pulse | 50A / 100A (<3s) |
| Cut-off voltage | 10.0V |
| Charge / discharge / storage temperature | 0–45℃ / −20–60℃ / 0–45℃ |
| Water / dust resistance | IP55 |
| Cell format | IFR32700 N60, 4S7P |
| Casing | Plastic |
| Dimensions | 223×121×175×175 mm |
| Weight | Approx. 4.8kg |
| Terminal | M6 |
Values are recorded exactly as listed for this model. Where a figure is absent, it was not read for this model and is not inferred from another model.
What the listing states
The listing states built-in automatic protection against over-charge, over-discharge, over-current and over-temperature, internal cell balancing and maintenance-free operation, together with the common 12V listing claims: about 40% to 50% of the weight of a comparable lead-acid battery, charging with most standard lead-acid chargers, and series application expansion up to 51.2V with two packs in parallel. Cycle life is listed as 2000 cycles at 0.2C to 70% capacity, a per-model figure with its own test condition that is not applied to any other model.
Cell format is IFR32700 N60 in a 4S7P arrangement, internal resistance is listed at no more than 50mΩ, and self-discharge at no more than 3.5% per month at 25℃. Charging voltage is listed as 14.0V to 14.6V, with a 21A charging current and a 42A maximum, a 21A discharging current, 50A maximum continuous and 100A maximum pulse for under three seconds, and a 10.0V cut-off. Charge temperature is 0℃ to 45℃, discharge temperature −20℃ to 60℃, and storage temperature 0℃ to 45℃.
Reading the table before ordering
Three values deserve a second look on this model. First, the dimensions are listed as 223×121×175×175 mm, a four-number form that should be clarified with the supplier rather than assumed to be a standard three-dimension size. Second, weight is listed as approximately 4.8kg, so mounting and transport planning should use a confirmed weight. Third, the 100A pulse figure is limited to under three seconds; it is not a continuous rating, and the continuous figure for this model is 50A.
Certificates for this model are handled by the site-wide line: “Certificates available upon request.” No certificate number is published, and no certificate scope is claimed beyond what a confirmed order would establish. Before payment, confirm MOQ, lead time, voltage, warranty and certification scope for your order.
Before ordering
Before payment, confirm MOQ, lead time, voltage, warranty and certification scope for your order.
Confirm the specification for the model actually ordered, not for a neighbouring model or a series range.