Is it OK to fast charge a deep cycle battery?

It is fine for flooded style batteries. But fast charging may shorten the life of your AGM or GEL battery, and it’s not recommended. The other problem is that the high charge rate will cause heat inside the battery. This can prevent it from reaching a 100% charged condition.

How fast can you charge deep cycle batteries?

A charger with 15 amps, for instance, will take about two hours to fully charge a battery at a 25-percent discharge value. Chargers with only 5 amps, however, will need a full six hours with the same battery.

What is the best charge rate for a deep cycle battery?

Consequently, when trying to charge a larger battery at that rate, it will take a very long time and the battery may discharge at a greater rate than the 2-amp charge can provide. It is better to charge a deep cycle battery at a higher charge rate like 6-amps, 10-amps or higher.

What happens if a deep cycle battery goes flat?

If your battery shows a good voltage when it’s fully charged, but quickly drops voltage to 11V or less when using power, this usually means the battery has a faulty cell and needs replacement. When a deep cycle battery is fully discharged (dead flat), it should reveal a reading of approximately 10.5V.

What voltage should I charge my deep cycle battery?

Deep Cycle Batteries in a cycling application require a recharging voltage of 2.43 to 2.45 volts per cell.

What happens if you overcharge a deep cycle battery?

Overcharging Deep Cycle Batteries: As a result of too high a charge voltage excessive current will flow into the battery, after reaching full charge, causing decomposition of water in the electrolyte and premature aging. At high rates of overcharge a battery will progressively heat up.

What is the proper way to charge a deep cycle battery?

You can charge the deep cycle battery in two methods. One approach is charging the battery in a place where the charging source is fixed, and another approach is using a portable charger . Not to repeat, the best way to charge a deep cycle battery is to pick up a portable charger what is eligible for this task.

What is the best battery charger for a deep cycle?

The winner of the best deep cycle battery charger roundup is the 6 Ampmatic TM-181 by OptiMATE. This 5 Amp, 12V charger is the fully automatic charger that can differentiate and save both sulfated and discharged battery. It has a 0.5 low voltage start with 2-step recovery for desulphation.

How long does a deep cycle battery take to charge?

If you slow charge (about 2 amperhours) you will not cook the plates that are inside the battery. Depending on the deep cycle rate of the battery will depend on how long you will achive a full charge. With the battery that I have, it will take about 24 hours to charge on the 2 amp setting.

What kind of charger for “deep cycle” marine battery?

Electronic chargers can adapt and service a deep-cycle marine battery as well as one which is of a cranking type. In the case of a smaller boat, portable chargers are more comfortable to use. This is the same if you want to charge multiple ships. Disadvantages; Onboard chargers are more on the expensive side of things, compared to the portable type.