How long does it take an 8 amp charger to charge a boat battery

So a 2 amp charger will deliver 2 amp per hour to this flat battery and if it requires 48 amps that in means it needs 24 hours to fully charge. Lets consider first a smaller boat one with a cranking battery and a single deep cycle battery like might be used with a 12V Minn Kota PowerDrive or Edge trolling motor.

For example a 15 amps battery charger will take two hours to charge a battery.

How long does it take an 8 amp charger to charge a boat battery. Choose a charger that is made for marine battery charging. Select one with a full charging capacity and an auto shutoff feature that charges in multiple stages. The charger is optimal when the charger size is between ten and twenty-five percent of the amp-hour rating of the battery.

It allows for faster recharge time. How long to Charge a Car Battery at 8 Amps. An 8 amp charger can charge a 50 discharged small car battery 200-315 CCA or RC 40-60 in about 3 to 4 hours a mid-sized battery 315-550 CCA or RC 60-85 in 4 to 5 hours or a large car battery 550-1000 CCA or RC 85-190 in 5 to 9 hours.

Double these times if the battery is fully discharged. Dont overcharge the battery because it limits the batteries function level. You have to charge the battery per the amp specification and discharge value.

For example a 15 amps battery charger will take two hours to charge a battery. A 5 amps battery charger will take six hours to charge the battery. For a 48 volt pack 425 volts for a 6 volt pack or 68 volts for a 96 volt transmitter pack.

See yellow area of NiMH table Battery Capacity 10 divided by charger output charge time 2000 mAh 200 2200 600 mA 366 hours. Basically the higher amps will allow you to charge a battery in a shorter period of time. When a battery charger says it is charging at 2 amps or 10 amps it is describing the number of amps it is delivering to the battery per hour.

So when you are charging a battery at 2 amps then it takes 24 hours for the battery to receive 48 amps of charge. So 50 of available capacity 60Ah at 146v and 13a it would take about 3 hours to get from 50 80 available capacity. But then as the battery builds up resistance the amps begin to taper off and taper off more quickly as the battery becomes increasingly charged.

So by the time its at say 90 charged it may only accept about 5 or 6 amps. So the charge rate decreases and charge time increases significantly as the battery becomes more charged. This means that it can deliver 1 amp per 48 hours or 2 amps in 24 hours 8 amps in 6 hours and so on.

So a 2 amp charger will deliver 2 amp per hour to this flat battery and if it requires 48 amps that in means it needs 24 hours to fully charge. Typical absorption times recommended by AGM battery manufacturers are from 4 to 8 hours. In most charging profiles the absorption time scales with the depth of discharge.

4 hours is probably enough after a 25 discharge but a long absorption time close to 8 hours should be used after a deep discharge. If using a low amp charger it can take up to 24 hours to charge your battery properly but a high amperage charger such as a 40 amp charger will get the job done adequately in an hour or less and will get you on the road again in only a few minutes. If you use a 12-volt charger for one battery make sure to keep your eye on both.

This is not the best way to recharge 8-volt batteries. If you have 3 batteries to charge take 2 12 volt battery chargers and hook the batteries up in a series. For example if you have a 50-amp charger and a single 100-amp hour battery d ivide the 100 amps by 50 amps to come up with a 2-hour charging time.

Another example is i f you had five 100 Ah amp-hour batteries for a total of 500 Ah and a 100-amp charger. The time required to charge your deep cycle battery system will be a function of the number of banks batteries that need to be charged and the number of amps-per-bank that your charger can output. Lets consider first a smaller boat one with a cranking battery and a single deep cycle battery like might be used with a 12V Minn Kota PowerDrive or Edge trolling motor.

10 amps are the recommended current. This is a slow charge. 20 amps are already fast charging.

Repeated fast charging could overcharge your battery. This could reduce the batterys service life in the long run. In order to determine how long itll take for you to charge your battery you need to know your batterys reserve capacity and.

A motor-powered charger often charges faster than one using a power outlet. Charging a Deep Cycle Faster. There are times when charging a battery quicker is desirable.

This is possible to do by increasing the amperage charge up to 20 amps from 10-15 amps that it starts at. 138 to 150 volts. 6-12 hours approximate Float Charge.

132 to 138 volts. Indefinite time at lower voltages Rapid Recharge Constant voltage charger. Maximum voltage 156 volts.

No current limit as long as battery temperature remains below 125F 517C. Charge until current drops below 1 amp. Stage 1 battery charging is typically done at 30-100 03C to 10C current of the capacity rating of the battery.

Stage 1 of the SLA chart above takes four hours to complete. The Stage 1 of a lithium battery can take as little as one hour to complete making a lithium battery available for use four times faster than SLA. Considering it took 511 minutes of absorption charging at the 4C charge rate your batteries would likely end up grossly under absorbed under charged and would not last very long.

Once we reduce voltage eg. Dropping to float prematurely I call this premature-floatulation we dramatically EXTEND charging time to 100 SOC. It charges at the usual 485V095A give or take and will take about 2 hours to charge the iPhone 8 and about 35 hours to fully charge your iPhone 8 Plus about 15 minutes faster than the.

You should charge your battery correctly by no means flatten your battery. Use the right type of charger which is faster. Choose a charger with temperature compensation and temperature sensor.

Set your charging range up to ten amps. The high range can reduce the battery life. Check the specification sheet for the battery and use the current setting.

A multi stage battery charger 720-36 is a 3 stage battery charger 140-36 as bulk phase absorption phase and float phase. So while charging the battery it supplies the energy to the battery in these three stages. As a result it charges your battery safely and keeps it safe from any internal damage.

For sure it takes a different amount of time to charge different types and sizes of batteries also but there are times for a normal-sized car battery around 62 Ah. Here is a list of how long time it takes to charge a car battery with different chargers. 24 to 48 hours.

12 to 24 hours.