Quick Answer: How Far Can You Discharge A Deep Cycle Battery?

Can 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..

Can you run a deep cycle battery flat?

Typically, a fully charged deep cycle battery will have a voltage of over 12.8V – 13V. … Faulty cells are difficult and usually impractical to repair, so you’ll need to replace the battery. When a deep cycle battery is fully discharged (dead flat), it should reveal a reading of approximately 10.5V.

How long will a 100ah battery run a fridge?

1000 hoursTherefore a 100ah (amp hour) battery will last for 1000 hours. A slightly different example is a 60 watt fridge running on a 12 volt power source uses 60 /12 = 5 amps, but only while the motor runs.

What should a 12 volt battery read under load?

A healthy 12 volt motorcycle battery should maintain a range from 9.5 – 10.5 volts under the load, for a good 30 seconds straight. If the battery begins to hold and then steadily declines, there is a problem. If the voltage drops to 0 volts, there is a problem. We call this, the open cell.

How long will a deep cycle battery stay charged?

six yearsMost deep cycle batteries can last up to six years with proper care and charging (depending on the frequency of use). It’s up to you to make sure that your battery isn’t being damaged by your charging routine.

Can a car alternator charge a deep cycle battery?

Yes it can but it is better to bring the engine speed up to 1500 rpm or so. The alternator will be able to charge the battery at a higher rate because it is turning faster. At idle speed 500–700 rpm the alternator wont produce much charging capacity.

How far can you discharge a AGM battery?

75-80% DOD is the maximum safe discharge for flooded and AGM batteries.

Should you completely discharge a deep cycle battery?

Deep cycle batteries tend to discharge about 45-75% of its capacity, depending on the manufacturer. … Use one of these to check the current charge of your deep cycle battery. They should be recharged when they indicate a 50% charge, but never let them get lower than 20% to ensure a long life.

What should a 12 volt AGM battery read when fully charged?

12.7 voltsVoltage on a fully charged battery will read 2.12 to 2.15 volts per cell, or 12.7 volts for a 12 volt battery. At 50% the reading will be 2.03 VPC (Volts Per Cell), and at 0% will be 1.75 VPC or less. Specific gravity will be about 1.265 for a fully charged cell, and 1.13 or less for a totally discharged cell.

At what voltage should I charge my deep cycle battery?

Charging – Flooded Types Deep Cycle Batteries in a cycling application require a recharging voltage of 2.43 to 2.45 volts per cell. This is 14.6/14.7 volts for a 12 volt nominal installation and 29.2/29.4 volts in a 24 volt site.

How long should you charge a deep cycle battery?

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.

At what voltage is a 12 volt battery considered dead?

This is called the “open-cell” or “resting” voltage of the battery. Resting fully charged 12-volt batteries are around 12.8-12.9 volts, and flat dead ones are at 12.0 volts, so 12.4 volts on a resting battery means it’s about 50% charged.

Is it better to charge a battery at 2 amps or 10 amps?

It is best to slow charge the battery. Slow charging rates vary depending on the battery’s type and capacity. However, when charging an automotive battery, 10 amps or less is considered a slow charge, while 20 amps or above is generally considered a fast charge.

How do I bring my AGM battery back to life?

Connect the batteries in parallel using the jumper cables. … Connect the charger leads to the terminals on the good battery.Turn on the charger. … Charge the batteries for 1 hour.Turn off the charger.Disconnect the charger from the good battery.Disconnect the jumper cables from both batteries.Check for warmth.More items…•

Is 11.9 volts enough to start a car?

A flat battery can show 12 volts , but not be good enough to start a car . … 11.9v indicates the battery is completely discharged. Anything under 12.2v means the battery is in a state of discharge, and a healthy battery should show 12.6v in a static state. Yours needs to be replaced.

How long should you trickle charge a deep cycle battery?

around 5.33 hoursHow long does it take to charge a deep-cycle battery? Charge times vary on the size of the battery, temperature, and the charger used. A standard 100 amp hour battery on a 15 amp charger at room temperature, will typically take around 5.33 hours to reach 80% capacity.

How long will a 100ah battery run an appliance that requires 400w?

How long will a 100ah battery run an appliance that requires 400w? A 100ah battery should provide 1 amp for 100 hours, 2 amps for 50 hours, 3 amps for 33 hours etc.