Victron Lithium SuperPack 12.8V/200Ah (M8)

Why lithium iron phosphate?

The lithium iron phosphate (LiFePO4 or LFP) battery is the safest of the regular lithium iron battery types. The nominal voltage of an LFP cell is 3.2V (lead acid: 2V/cell). A 12.8V LFP battery therefore consists of 4 cells connected in series and a 25.6V battery consists of 8 cells connected in series.

Robust

A lead-acid battery will fail prematurely due to sulfation in the following cases:

- When it is operated for a long time in an insufficiently charged state (i.e. when the battery is rarely or never fully charged).

- If it is left in a partially charged or, even worse, completely discharged state (yacht or motorhome during the winter).

An LFP battery does not need to be fully charged. The operating life is even slightly increased if the battery is only partially charged instead of fully charged. This is a significant advantage of LFP batteries compared to lead-acid batteries. Other advantages include the wide operating temperature range, excellent cycling, low internal resistance and high efficiency (see below). LFP is therefore the chemistry of choice for demanding applications.

Efficient

In many applications (particularly off-grid solar and/or wind power plants), energy efficiency can be of critical importance. The round trip energy efficiency (discharge from 100% to 0% and back to 100%) of an average lead acid battery is 80%. The round trip energy efficiency of an LFP battery is 92%. The charging process of a lead acid battery becomes particularly inefficient when the 80% state of charge mark is reached, resulting in energy efficiency of only 50%. This value is even lower for solar plants, where energy reserves are needed for several days (the battery is operating at a state of charge between 70% and 100%). An LFP battery, on the other hand, still achieves an energy efficiency of 90% even when it is in a shallow state of discharge.

Size and weight

Space savings of up to 70%

Weight savings of up to 70%

Expensive?

LFP batteries are expensive compared to lead-acid batteries. However, in demanding applications, the higher initial cost is more than paid for by the longer operating life, high reliability and excellent energy efficiency.

Bluetooth

Cell voltages, temperature and alarm status can be monitored via Bluetooth. This is very useful for detecting a (possible) problem such as cell imbalance.

Important note: When you purchase a battery, you will be charged a deposit of €7.50 per battery. This will be refunded to you as soon as you have provided proof of returning your old battery or you have sent it back to us.