12V Lithium Battery Packs

Two 12V families: equipment packs (11.1V class) and LiFePO4 units (12.8V)

A 12V lithium ion battery pack is not one product. At this voltage we build two families, and the first question on any enquiry is which one your project belongs to.

The first family is equipment packs in the 11.1V class. These are built to the device: the pack fits a defined compartment, follows the device's current profile, and is specified together with its BMS, connector and housing. The search term 12v li ion battery pack usually refers to this family when it comes from an OEM engineer — a pack that powers a monitor, a sickbed or an industrial instrument.

The second family is 12V LiFePO4 units with 12.8V nominal voltage, in 100Ah, 120Ah and 200Ah documented classes. These are standalone batteries for storage and motive use. They are selected by capacity and discharge demand rather than by an enclosure drawing. If your equipment runs from a standalone battery rather than a fitted pack, see our 12V LiFePO4 batteries; if the pack must fit inside a product, you are in the equipment family.

State the family at the start of the enquiry and the specification conversation moves faster, because the questions we ask are different for each.

Documented capacities in each family

In the 11.1V equipment family, three packs are documented. The 12V 2.6Ah pack uses a 3S1P configuration and powers sickbed equipment. The 12V 10Ah pack uses a 3S4P configuration and serves patient monitors. The 11.1V 5.2Ah pack is a 3S2P industrial pack. In each configuration name, the series count sets the pack voltage and the parallel count sets capacity — 3S1P and 3S4P share the same voltage class but differ in runtime.

In the LiFePO4 family, the documented classes are 100Ah, 120Ah and 200Ah at 12.8V nominal. These are standalone units, so capacity choice follows the load and the required runtime rather than a device compartment.

The capacities above are documented classes, not a closed list. Equipment packs are built to the device, so the specification work starts from your current profile and the physical space; LiFePO4 units are chosen from the documented classes. For device work, our medical device batteries page covers how a pack specification is derived from the equipment itself.

Choosing between li-ion and LiFePO4 at 12V

The choice follows the application, not a preference for one chemistry.

Take the equipment pack when the battery must live inside a device. An 11.1V-class pack is specified alongside the device's enclosure, connector and BMS, and the parallel count is set to reach the runtime the device needs. The 12V 2.6Ah 3S1P sickbed pack and the 12V 10Ah 3S4P patient monitor pack are examples of this approach: same voltage class, different capacity, each built around its equipment.

Take the LiFePO4 unit when the battery is a standalone block for storage or motive use. The 12.8V nominal units in 100Ah, 120Ah and 200Ah classes are selected by capacity and discharge demand, not by a compartment drawing.

A frequent source of confusion is the label. A 12V li ion battery pack and a 12V LiFePO4 unit are both sold as "12V", but their nominal voltages differ — 11.1V for the equipment packs above, 12.8V for the LiFePO4 units. Check what your charger and device expect before fixing the family.

Documentation follows the same rule. UN38.3, IEC 62133 and MSDS documents can be confirmed and provided for specific models — tell us the model you are buying and we will confirm which documents cover it. The plant is ISO 9001 and ISO 14001 certified.

If you are still deciding, ask about 12V packs and describe the device or the load; we will confirm which family fits before any specification is written.

Frequently Asked Questions

Do you have 12V packs for medical and industrial devices?

Yes. The 11.1V equipment family is built for exactly this: the 12V 2.6Ah 3S1P pack for sickbed equipment, the 12V 10Ah 3S4P pack for patient monitors, and the 11.1V 5.2Ah 3S2P industrial pack. Each is specified against the device's current profile and physical space. Tell us the device and we will confirm which documented pack fits or whether a new specification is needed.

What capacities are available at 12V?

It depends on the family. Equipment packs in the 11.1V class are documented at 2.6Ah (3S1P), 10Ah (3S4P) and 5.2Ah (3S2P). LiFePO4 units at 12.8V nominal are documented in 100Ah, 120Ah and 200Ah classes. These are documented classes rather than a fixed catalogue; equipment packs are built to the device, so the capacity follows your runtime requirement and the available space.