If you’re not in a hurry, you can select a smaller charger. Some folks wanting quick recharge should look for a charger with more amps, such as a golf cart charger. To calculate your total charge time for a battery, a good rule of thumb is to take the amp hour rating of the battery and divide by the charger rating (amps) and then add about 10% for the extra time to totally top off the battery. It would take a 10 amp charger about 11 hours to recharge a dead battery to near 100% full charge. Another instance would be a marine deep cycle battery rated at 100 amp hours. For example, a typical full-size auto battery is about 50 amp hours, so you would choose a 10 amp charger that would take about 6 hours to recharge it if the battery were completely dead. We don’t mean physical size, but how many amp hours your battery stores. However, some of our gel cell chargers will work well with the other battery types. Whether your battery is maintenance free, wet cell (flooded), AGM (absorbed glass mat), gel cell or VRLA (valve-regulated lead acid), one charger should work for all types except for gel cell. Simple steps to select the right battery charger for your needs: Step 1: Choosing a Charger Based on Battery Type All the chargers we sell can remain connected to a battery indefinitely and will not overcharge or damage it. This allows the battery to be charged quickly, correctly, and completely when using a smart charger. Simply put, the charger collects information from the battery and adjusts the charge current and voltage based on this information. This type of battery charger is designed to charge lead acid and other types of batteries based on computer-generated algorithms. We cater specifically to microprocessor-controlled chargers, also known as smart chargers. All the chargers we stock are reviewed, tested and selected based on function, reliability and durability. Please note that the capacity reduction will be even faster in case of a constant power load, such as an inverter.Let me start with a disclaimer: does not sell inexpensive, off-the-shelf battery chargers often found at retail outlets and certain other online stores. The effective capacity decreases with increasing discharge current (see table 1). The rated capacity of Victron Tubular Plate Long Life batteries refers to 10 hours discharge. 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. 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. Victron VRLA batteries have exceptional discharge recovery, even after deep or prolonged discharge. Victron VRLA batteries can therefore be stored for up to a year without recharging, if kept under cool conditions. The self-discharge doubles for every increase in temperature by 10☌. The rate of self-discharge is less than 2% per month at 20☌. As explained in our book ‘Energy Unlimited’, AGM batteries are more suitable for short-time delivery of high currents than gel batteries.īecause of the use of lead calcium grids and high purity materials, Victron VRLA batteries can be stored during long periods of time without recharge. In these batteries the electrolyte is absorbed into a glass-fibre mat between the plates by capillary action. VRLA batteries are maintenance free for life.ĪGM stands for Absorbent Glass Mat. Gas will escape through the safety valves only in case of overcharging or cell failure. VRLA stands for Valve Regulated Lead Acid, which means that the batteries are sealed. The AGM range has very low internal resistance making them particularly suitable for high current discharge applications such as for inverters, thrusters and winches.
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