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7-10 Year Float Design Life @ 20°C
CCA @ 0ºF: 300
RES CAP @ 80ºF: 90
66 Amp Hours
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|Battery Rated Nominal Voltage||12|
|Battery Rated Capacity Amp-hour @20 Hr Rate to 1.6Volts per Cell||66|
|Battery Mass (kg)||24|
|Battery Technology||AGM (Absobed Glass Mat) Sealed VRLA (Valve Regulated Lead Acid)|
|CCA @ 0ºF||300|
|RES CAP @ 80ºF||90|
VRLA AGM: design life 7-10 years
VRLA GEL: design life 12 years
VRLA GEL 2 Volt cells: design life 20 years
The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches.
The GEL model range offers best deep cycle durability and overall longer life. The use of high purity materials and lead calcium grids ensure that for both AGM and GEL products have particularly low self-discharge so that they will not go flat during long periods without charge. Both ranges are supplied with M8 drilled, flat copper terminals ensuring best possible connection contact and eliminating the need for battery terminals. The batteries are compliant with both CE and UL specifications in ABS fireproof containers and come with Victron's 2 year world-wide warranty.
VRLA stands for Valve Regulated Lead Acid, which means that the batteries are sealed. Gas will escape through the safety valves
only in case of overcharging or cell failure.
VRLA batteries are maintenance free for life.
AGM stands for Absorbent Glass Mat. In these batteries the electrolyte is absorbed into a glass-fibre mat between the plates by
capillary action. As explained in our book ‘Energy Unlimited’, AGM batteries are more suitable for short-time delivery of high
currents than gel batteries.
Here the electrolyte is immobilized as gel. Gel batteries in general have a longer service life and better cycle capacity than AGM
Because of the use of lead calcium grids and high purity materials, Victron VRLA batteries can be stored during long periods of
time without recharge. The rate of self-discharge is less than 2% per month at 20°C. The self-discharge doubles for every
increase in temperature by 10°C.
Victron VRLA batteries can therefore be stored for up to a year without recharging, if kept under cool conditions.
Victron VRLA batteries have exceptional discharge recovery, even after deep or prolonged discharge.
Nevertheless repeatedly deep and prolonged discharge has a very negative effect on the service life of all lead acid batteries,
Victron batteries are no exception.
The rated capacity of Victron AGM and Gel Deep Cycle batteries refers to 20 hour discharge, in other words: a discharge current
of 0,05 C.
The rated capacity of Victron Tubular Plate Long Life batteries refers to 10 hours discharge.
The effective capacity decreases with increasing discharge current (see table 1). Please note that the capacity reduction will be
even faster in case of a constant power load, such as an inverter.
|Discharge time (constant current)||End Voltage (V)||AGM "Deep Cycle" %||Gel "Deep Cycle" %||Gel "Long Life" %|
|5 min.||8 C||7C|
Our AGM deep cycle batteries have excellent high current performance and are therefore recommended for high current
applications such as engine starting. Due to their construction, Gel batteries have a lower effective capacity at high discharge
currents. On the other hand, Gel batteries have a longer service life, both under float and cycling conditions.
High temperature has a very negative effect on service life. The service life of Victron batteries as a function of temperature is
shown in table 2.
|20°C / 68°F||7 - 10||12||20|
|30°C / 86°F||4||6||10|
|40°C / 104°F||2||3||5|
As is shown by the graph below, capacity reduces sharply at low temperatures.
Batteries age due to discharging and recharging. The number of cycles depends on the depth of discharge, as is shown in figure
The most common charge curve used to charge VRLA batteries in case of cyclic use is the 3-step charge curve, whereby a
constant current phase (the bulk phase) is followed by two constant voltage phases (absorption and float), see fig. 3.
During the absorption phase the charge voltage is kept at a relatively high level in order to fully recharge the battery within
reasonable time. The third and last phase is the float phase: the voltage is lowered to standby level, sufficient to compensate for
Disadvantages of the traditional 3-step charge curve:
Victron developed the adaptive charge curve. The 4-step adaptive chare curve is the result of years of research and testing.
The Victron four-step adaptive charge curve solves the 3 main problems of the 3-step curve:
When a battery is not frequently deeply discharged, a 2-step charge curve can be used. During the first phase the battery is
charged with a limited current (the bulk phase). Once a pre-set voltage has been reached the battery is kept at that voltage (the
This charge method is used for starter batteries in vehicles and in uninterruptible power supplies (UPS).
The recommended charge voltage settings for a 12V battery are shown in table 3.
The charge voltage should be reduced with increased temperature. Temperature compensation is required when the
temperature of the battery is expected to be less than 10°C / 50°F or more than 30°C / 85°F during long periods of time.
The recommended temperature compensation for Victron VRLA batteries is -4 mV / Cell (-24 mV /°C for a 12V battery).
The centre point for temperature compensation is 25°C / 70°F.
The charge current should preferably not exceed 0,2C (20A for a 100Ah battery).The temperature of a battery will increase by
more than 10°C if the charge current exceeds 0,2C. Therefore temperature compensation is required if the charge current