Ultraflex Group

12,8V and 25,6V lithium SuperPack batteries

12,8V and 25,6V lithium SuperPack batteries Batteries VICTRON ENERGY® - Battery chargers, inverters, batteries

12,8V and 25,6V lithium SuperPack batteries

  • 12,8/20
  • 12,8/60
  • 12,8/100
  • 12,8/200
  • 25,6/50

Integrated BMS and safety switch

The SuperPack batteries are extremely easy to install, needing no additional components. The internal switch will disconnect the battery in case of over discharge, over charge or high temperature.

Abuse proof

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.

A Lithium-Ion 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 Li-ion compared to lead-acid.

The SuperPack batteries will cut-off the charge or discharge current when the maximum ratings are exceeded.


In several applications (especially off-grid solar), 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 Li-ion 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 are required (battery operating in 70% to 100% charged state).

In contrast, a Li-ion battery will still achieve 90% efficiency even under shallow discharge conditions.

Can be connected in parallel

The batteries can be connected in parallel. Series connection is not allowed. Use in upright position only.


MODEL 12,8/20 12,8/60 12,8/100 12,8/200 25,6/50
Nominal voltage 12,8V 12,8V 12,8V 12,8V 25,6V
Nominal capacity @25°C 20Ah 60Ah 100Ah 200Ah 50Ah
Nominal capacity @0°C 16Ah 48Ah 80Ah 160Ah 40Ah
Nominal energy @25°C 256Wh 768Wh 1280Wh 2560Wh 1280Wh
Cycle life @80% DoD and 25°C 2500 cycles
Max continuous discharge current 30A 30A 50A 70A 50A
Peak discharge current (10 sec) 80A 80A 100A 100A 100A
Charge voltage, absorption 14,2-14,4V 14,2-14,4V 14,2-14,4V 14,2-14,4V 28,4-28,8V
Charge voltage, float 13,5V 13,5V 13,5V 13,5V 27V
Max continuous charge current 15A 30A 50A 70A 50A
Dimensions            WxDxH mm (") 181x77x167 (7.1x3x6.6) 229x138x213 (9x5.4x8.4) 330x171x220 (13x6.7x8.7) 520x269x208 (20.5x10.6x8.2) 330x171x220 (13x6.7x8.7)
Weight kg (lbs) 3,5 (7.7) 9,5 (21) 14 (30.9) 31 (68.3) 14 (30.9)

Part No. Model Description
23097Z 12,8/20 12,8V/20Ah battery
22840X 12,8/60 12,8V/60Ah battery
22841Z 12,8/100 12,8V/100Ah battery
22842B 12,8/200 12,8V/200Ah battery
23098B 25,6/50 25,6V/50Ah battery