Which one of those should I be using? it's 10amp 12 volt. The average car battery will provide about 48 amp hours before it is depleted of power and a 40 amp battery charger would restore that number of amp hours in an hour or less. So, if you’re using a charger with a ten amps rating, it will merely take 4-5 hours to charge the flat 48 amp-hr battery fully. The amount of time to charge a deep cycle battery depends on the battery’s “size.” if it has lots of amps, then expect a long amount of charging time too. It's been there for 3 hours and the "charge complete" light has not turned on. At least 10-15 amps is needed for the job. (The best charger to use to charge a car battery is a 3-stage automatic 12 volt/10 amp charger.) A 40 amp battery charger is an extremely powerful device. Using a 5 amp charger, we have 10 amp hours divided by 90% of 5 amps (.9x5) amps = 2.22 hour recharge time estimate. In order to get a quick charge, a charger that delivers more amps is required. My car won't start the battery is pretty much dead...My brother just came by and gave me his battery charger. So, make sure you choose the correct charger for your battery. For a car battery in most cases, it is okay to use a 10 amp charger and is normally the recommended amount. Myrtice Hathaway . I'm charging the battery in my car. How long do you charge you battery? There are many possible issues that could lead to your car battery taking a long time to charge. The amp used to charge your battery will depend on the type of your battery and any damage it has suffered. A deep cycle battery is, in particular, a hybrid battery. You might have to charge the battery longer if your amp setting is lower. It also has a 12 volt / 2 amp charge setting and a 12 volt / 10 amp charge setting. Marine battery chargers are between 10 and 15 amps. Depending on the age of your battery, the capacity and construction of the charger and the charging technique used, it may take a few hours to reach a complete charge. The battery on my truck is almost dead. I need to leave to go somewhere in two hours will it be enough of a charge in two hours to at least start the car so i can go and while I'm driving the alternator will charge it right? Additionally, you want to use a charger with an output of 10 amps or fewer to charge your lawn tractor’s battery. So it is pretty much crucial to know how to charge a deep cycle battery properly. How Long to Charge a Car Battery at 40 Amps. Trickle charges don’t deliver enough juice to charge up a deep cycle battery. Charging a regular car battery with a typical charge amp of around 4-8 amperes will take about 10-24 hours to charge it fully. For example, a 100 amp hour battery with a 10 % discharge would need 10 amps replaced. The needle will drop as the battery charges. Using a 2 amp charger will take you quite a long time to charge your car battery at an acceptable level. A 10 amp charger is the best one to use with a 12 volt battery to charge it fast and efficiently. The higher the charge output, the faster a flat battery … If he's got one, maybe you need one, too. Before answering this question, let us first get to know what a battery charger is and how it works! 10 amps are needed for Deep Cycle Marine Batteries. An 80 amp charge will charge your 12 volt car battery in an hour and a 40 amp will charge it within 1 to four hours depending on how depleted your battery was to start with. Most LiPo batteries have a maximum charge rate of 1C, or 1 times the capacity. Some chargers shut off automatically when the battery reaches a full charge. It’s different from the car battery and marine battery. Now it’s ready to reinstall in your boat (if you removed it for charging). The 200AH battery can feed 200 Amps for 1 hour, or 100 Amps for 2 hours, or 10 amp for 20 hours. Using the example above, it would take around 4.5 hours to recharge that battery. If you are wondering how to charge a lawn mower battery, you should know that you do not need to remove your mower’s battery before charging it. It helps to extend the life of your battery and make it more reliable. Therefore, this type of charge is often used as a trickle charge or for maintaining your battery at probable charge and not trying to get a fast charge to boost your battery and get it started. Subsequently, question is, how long will a 200ah battery last? Reply • Ratted article 5 • January 21, 2020 at 11:55 am Ivan Uriegas Hello, I bought a 12v 22ah VRLA battery (to run a 12v 13a water pump), I also bought a smart charger (a Motopower 12v 2a) to charge/maintain it. Larger chargers may be used to decrease charge time, but may decrease battery life. “Float chargers” are the next type of charger. Unplug the charger once it indicates the battery is fully charged. For example, if your battery has 100 amps, then it’s bound to have at least 50 to 10 hours of charging time. I have a batter charger with 10 amp, 25 amp, and boost settings. How long should I charge an average battery (2006 VW Jetta) in order to obtain a full charge at 10 amp and 25 amp settings. For this procedure, you need a voltmeter to measure the AGM battery charging amps. The easiest way to determine the appropriate battery charger is to use 7 - 10% of the rated amp-hour capacity of your battery. Will a Trickle Charger Be Sufficient? That Battery Tender is hooked up to the RevZilla COO's motorcycle. However, as said, different chargers are available that charge at different rates, like two amps to 10 amps. If you use one with a greater output, you risk damaging your mower’s battery. The charger should fully charge the battery in one hour at the 10-amp setting. Recharge time can be approximated by dividing the amp hours to be replaced by 90% of the rated output of the charger. One of the best ways to measure the car battery amps is through a multimeter. BUT KNOW THIS: More solar panels are just going to charge your battery faster, or more adequately in low light conditions. When the battery is fully charge, turn the charger off and disconnect it from the power outlet. But there is a wide range of chargers with different charge rates on the market - from 2 to 10 amps. Now it is the right time for checking out that status of the discharge battery. Thus, a 100 ah battery would take about a 25 amp charger (or less). If you have 400 watts of solar, you will charge twice as fast. They have to be overcharged to 106%. I'm going to see if charging it works before I go buy a new one. NEVER attempt to charge your battery if it is still hot from use or damaged in any way. The small car battery is categorized as an RC 40-60. My battery is not dead, just seems weak. The average time to charge your 48 amp battery is up to 24 hours. If the battery store about 10.5 volts charge on it, then you can leave your battery for more charging. A car battery is typically 48 amps. To boost your battery enough to be able to start the engine, it would take around 2-4 hours. a 1 or 2 amp "smart charger" can be used for battery I will be on the road for at least 30minutes to my destination The charger can charge a 50% discharged medium-sized battery, which is RC 60-85, in about 3 to 4 hours, or a large-sized battery, which is RC 85-190, in approximately 4-7 hours. How To Charge A Marine Battery Fast The traditional method of charging your boat battery using a charger is the most highly recommended way. When I plug in my device, I feel like it only charges 1 out every 4 attempts. You need to be careful when charging your LiPo battery. Once the needle has dropped to about half of your desired amps, the battery is fully charged. A 10-amp charger is able to charge a half-discharged small car battery in about 2-3 hours. For example, if you had a 50 amp-hour rated battery, you would to select a battery charger with a peak amperage rating of 3.5-5.0 Amps. Modern float chargers get a battery charged and then switch on and off automatically to keep the battery’s charge rate at the optimal charge … Most car batteries should use a 10-amp charger. You can of course use a higher amperage to get a really fast charge. And How long to charge a deep cycle battery?. RevZilla photo. A 10 amp charger, on the other hand, will take 5 hours. Obviously, it is the … How Long to Charge a Car Battery at 10 Amps (260-14) When you are using a 10 amp battery charger, it will generally take 4-5 hours to charge a 48 amps car battery. A trickle battery charger will charge a battery at the same rate as the battery’s self-discharge, which is how quickly a battery’s capacity falls during storage. So, how long does it take to charge a battery at 6 amps? And to avoid having a flat battery, it is important to have a battery charger that will bring back the battery to life. So, if your battery is 3000 mAh, then its max charging rate would be 3 amps. A battery in this discharge condition is called a flat battery. I've only had it for 2 months so I doubt I've swollen the battery but I'll plug it in for 2-3 hours, unplug it and the charge doesn't change much and the red light comes on. As long as you're able to charge it correctly, you can enjoy a fully-operational RV without the worry of power outages. It should move to the desired amps that you want to charge the battery too. It won't hurt it it will just charge faster at the higher amp rate, and at a 50 amp rate it may surface charge instead of complete charge. (Assuming the battery is dead o… A basic charger usually charges at around 2 amps - and so needs 24 hours to deliver the 48 amps needed to fully charge a flat, 48 amp hour battery. If you don’t prefer a mounted battery charger I would recommend the NOCO Genius 10 6v 12v 10 Amp Battery Charger and Maintainer. This means that a 2 amp charger will take 24 hours. I have the charger set to 12 volts, 10 amps. Smaller chargers are fine for long term floating, e.g. Turn on the battery charger and check the movement of the needle on the meter. If you're still a beginner, read on as I show you how to charge an RV battery … HOW LONG TO CHARGE A BATTERY: WHAT MAKES THE TIME VARY. Take the amount of amp-hours needed by the battery and divide it by 10 amps. In some cases, switching to a lower amp (5-10 is preferred) will allow the battery to continue charging without any overheating problems arising. I want to give it a full charge. My battery charger has a 6 volt setting which I do not use. In this way, you charge your battery correctly and prevent damage and ensure a long … No, A car battery charger on trickle charge is too low to do the job. Step 3: Charge the battery at a 10-amp rate. No. Charging Motorcycle Batteries A fully-charged 12-volt motorcycle battery should measure about 12.6 - 13.5 volts between terminals depending upon its chemistry. Ways to measure car battery amps. The best way to maintain a long life for your car battery is by recharging it slowly. Many trickle chargers will output the same voltage and current regardless of the needs of the battery to reach 100% capacity, which can lead to battery damage if substantially overcharged.