Victron Smart Lithium LiFePO4 Marine Battery, 25.6 Volt, 200 Amp-Hour

Description

Our Victron lithium-iron-phosphate Smart Lithium LiFePO4 Marine Battery, 25.6 Volt (for 24 or 48 volt systems), 200 Amp-Hour, is roughly the size of a group 4D 12V marine battery, but offers triple the capacity and much lower weight.

Why lithium-iron-phosphate?

Lithium-iron-phosphate (LiFePO4 or LFP) is the safest of the mainstream li-ion battery types. The nominal voltage of a 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.

Rugged:
A lead-acid battery will fail prematurely due to sulfation:

• If it operates in deficit mode during long periods of time (i.e. if the battery is rarely, or never at all, fully charged).
• If it is left partially charged or worse, fully discharged (yacht or mobile home during wintertime).

A LFP battery does not need to be fully charged. Service life even slightly improves in case of partial charge instead of a full charge. This is a major advantage of LFP compared to lead-acid. Other advantages are the wide operating temperature range, excellent cycling performance, low internal resistance and high efficiency.

LFP is therefore the chemistry of choice for demanding applications.

Efficient:
In several applications (especially off-grid solar and/or wind), energy efficiency can be of crucial importance. The round-trip energy efficiency (discharge from 100% to 0% and back to 100% charged) of the average lead-acid battery is 80%. The round-trip energy efficiency of a LFP battery is 92%. The charge process of lead-acid batteries becomes particularly inefficient when the 80% state of charge has been reached, resulting in efficiencies of 50% or even less in solar systems where several days of reserve energy is required (battery operating in 70% to 100% charged state). In contrast, a LFP battery will still achieve 90% efficiency under shallow discharge conditions.

Size and weight:
Saves up to 70% in space, Saves up to 70% in weight

Expensive?
LFP batteries are expensive when compared to lead-acid. But in demanding applications, the high initial cost will be more than compensated by longer service life, superior reliability and excellent efficiency.

Bluetooth:
With Bluetooth cell voltages, temperature and alarm status can be monitored. Very useful to localize a (potential) problem, such as cell imbalance.

Specifications:

• Nominal Voltage – 25.6 VDC (for 24 or 48 volt systems)
• Nominal Capacity (25 deg C) – 200 Amp-hour (at discharge <= 1x Cap)
• Nominal Energy (25 deg C) – 5120 Wh
• Max Continuous Discharge – 400 Amps
• Recommended Continuous Discharge – <= 200 Amps
• Max Charge Current – 400 Amps
• Recommended Charge Current – <= 100 Amps
• 9-3/8 H x 25-5/8 L x 6-1/2 W, 86 Lbs