Source(s): long charge 12v 200ah deep cycle battery 125 watt solar panel: https://biturl.im/KGBev. The ideal charging voltage for a calcium battery is 14.8V for the recombination process to properly occur.. If you have a 50AH battery and you hook a 30 amp charger to it, you are risking overheating it, warping the plates, and losing electrolyte solution through evaporation due to electrolysis. If you’re going to do it, try to leave the car running for at least 20-30 minutes and turn off all unnecessary accessories (AC, radio, lights, etc.). The typical lead acid charging voltage is between 2.15 volts per cell (12.9 volts for a 6 cell battery) and 2.35 volts per cell (14.1 volts for a 6 cell battery).. A car battery usually holds 48 amps so if you take that it charges at approximately 1 amp per hour you can work out how long it will take to charge your battery with various amperage chargers. NICKEL METAL HYDRIDE (NiMH) BATTERY PACK MAINTENANCE 1) If you are having trouble charging a NiMH battery pack, trickle charge it at 1/10C (1/10 its capacity) to wake it up and reach full capacity. Then take the battery capacity which measured in AH and divide it by the amp rating (the result from prior computation) of the solar panel and then adding 10% of the Charging Time to it. A 315CCA or 60RC battery is a 46.2AH equivalent. Of course, these are all estimations that do try to factor in inefficiencies but battery science is extremely complex and full of theories, laws, and estimations. The reason your smart charger won’t begin the charging process is because of its built-in safety feature. You also have to take in mind of the kind of car battery. Do not use this large of a charger for car batteries. Limitations to these results could be from any of the following: internal resistance, heat, the age of the battery, the specific gravity of each of the cells, the sulfation level on the plates, the true output of the charger, and more. A 2 amp trickle charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in about 11 to 14 hours, a mid-sized battery (315-550 CCA or RC 60-85) in 14 to 18 hours, or a large car battery (550-1,000 CCA or RC 85-190) in 18 to 35 hours. 15 amp chargers should be used with caution. Yes, a trickle charger that is not a “smart charger” operating in “float” mode will eventually ruin your battery if left connected over time. This type of amperage is used when using a trickle charger or just maintaining your battery at a certain level and not trying to get a quick charge to boost your battery and get it started. If you have a modern smart charger that has a “float” or “maintain” mode, you can leave these hooked up indefinitely, as they only give out current when the battery naturally self-discharges. 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. 40 amp chargers give off an amperage at nearly 100% of the estimated amp hours of a typical starting battery and may be hazardous and shorten the lifespan of your battery. The additional 10% is to make sure that the battery is fully-charged. The purpose of this chart was to extrapolate what Schumacher (an actual manufacturer of battery chargers) provided. A small car battery can be charged in 24 hours at 2 amps, or 5 hours at 10 amps. In order to see how Schumacher (a battery charger manufacturer) treats the different classes of car batteries with regards to AH, I did a little math. Charging your car battery with a 2 amp car battery charger will take a reasonably long time, up to 24 hours to reach an acceptable charge, this is determined by the fact that your car battery is usually 48 amps and it takes about 1 amp charge per hour on average. Simple you need at least C/10 charge current (20-Amps). Double the times if 100% discharged. In order to estimate how long a charger will take to charge, we need to get the car batteries to an AH equivalent rating because, for example, a 4-amp charger, will generally replenish 4AH within a battery per hour (not including inefficiencies). I continued to do all of this math for all of the values and reached 36AH to 46.2AH, 46.2AH to 58.8AH, and 58.8AH to 111AH for the battery ranges for Car/Truck batteries. Most smart chargers won’t pass current through their cables until a minimum voltage is detected first from a battery. It’s not recommended to use this large of a charger. The advice given on this website is for informational purposes only. A 1.5 amp trickle charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in about 15 to 19 hours, a mid-sized battery (315-550 CCA or RC 60-85) in 19 to 25 hours, or a large car battery (550-1,000 CCA or RC 85-190) in 24 to 46 hours. No, A car battery charger on trickle charge is too low to do the job. Double these times if the battery is fully discharged. in about 3 to 4 hours duration. link to Can I Use a Different Battery in my Car? A 4 amp charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in about 6 to 7 hours, a mid-sized battery (315-550 CCA or RC 60-85) in 7 to 9 hours, or a large car battery (550-1,000 CCA or RC 85-190) in 9 to 17 hours. The 6AH battery needs 3AH recharged, so 3AH/2.5 hours = 1.2 amps per average hour from the 1.5 amp charger. Once that was done, you simply take any of the values, calculate the percentage of AH that needs to be recharged, divide it by 0.8, and then divide it by the number of amps of the charger. So you need 1200 / 250 = 4.8 hours of bright sunlight. These are great chargers to have with you when travelling so as to give your battery the boost is needs when you end up with a depleted battery and help around to give you a jump start using jumper cables. Double these times if the battery is fully discharged. Batteries will tend to overheat, overcharge, and “boil” electrolyte off when they are receiving an amperage greater than 25% of their total amp hour rating. Using the example above, 600W of solar panels will charge a 200Ah battery in about 5 hours ", if so, please share and rate it. If you’re wondering how long it takes to charge your car battery, then you’re likely having a bad day! So, 6AH/5 hours = 1.2 amps per average hour from the 1.5 amp charger. Green = Safe Charger Amp Rating, Yellow = Use Caution, Red = Risk of overcharging / battery damage. Double these times if the battery is fully discharged. Key Takeaway: Estimate 200 watts of solar panels per 100 amp hours of useable battery capacity (100Ah Lithium or 200Ah AGM). No need to add a battery disconnect for charging. The problem is it will not charge using my trickle charger. Car Batteries should not be discharged at a high rate. (adsbygoogle = window.adsbygoogle || []).push({}); Trickle chargers are mainly used to maintain your charge on your battery over a period of time so that it never runs out of charge and you are never left stranded with a flat battery. A lead acid battery is 50% efficient at charging. Double these times if the battery is fully discharged. How long would it take the solar panel to fully charge the battery 3. This leads to overheating, the boiling-off of the electrolyte or worse. Your car battery’s rating will be on the sticker on the top of the battery. If we apply the same logic to the CCA/RC batteries, we can see that it takes 19.25 hours to charge a 315CCA or 60RC battery from 50%. Just taking a look at the selection at a big-box store, let alone a designated battery... What Happens If You Disconnect the Positive Terminal First? If you’re in a hurry though, you can simply click on your charger’s amp rating below for a brief answer or and you can cross-reference your charger with your battery in the charts below for a wider range of charging times. A deep cycle battery is, in particular, a hybrid battery. In this way, you charge your battery correctly and prevent damage and ensure a long … Let’s take the 32AH battery. The length of time it takes to charge your car battery is completely dependent on the size or amp of your battery and the amp of the car charger you are using. 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 (550-1,000 CCA or RC 85-190) in 5 to 9 hours. For a 200ah battery, if you are giving 1A (Ampere) supply, it’ll take 200hours to fully charge. A 15 amp charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in about 2 hours, a mid-sized battery (315-550 CCA or RC 60-85) in 2.25 hours, or a large car battery (550-1,000 CCA or RC 85-190) in 2.5 hours. Only use a 20 amp smart charger on the starter batteries on the high end of the scale – and use only with great caution. Double these times if the battery is fully discharged. If this was your alternator it had better be robust enough to deliver its full output for at least 1 hour straight. 5 years ago. Can this system provide 1500watt-hour during the day and another 1500watt-hour during the night 2. I'm Robert and this blog is about my journey of learning about battery banks, generators, and power outage preparations. Shop now! A 10 amp charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in about 2 to 3 hours, a mid-sized battery (315-550 CCA or RC 60-85) in 3 to 4 hours, or a large car battery (550-1,000 CCA or RC 85-190) in 4 to 7 hours. If you have two 100Ah batteries wired in parallel, you have 200Ah capacity. The Stage 1 of a lithium battery can take as little as one hour to complete, making a lithium battery available for … especially if you don’t have a modern smart charger! After you locate where your car battery’s rating fits, you will see an estimate for the charging time depending on whether or not it is completely dead (100% discharged) or half dead (50% discharged). If you have an older trickle charger, be sure to remove the cables shortly after the battery has reached its full charge. Yes, they do but it isn’t an ideal way of charging a 50% or more discharged battery. 15 amp hour chargers would be acceptable for larger deep-cycle batteries, but are a little strong for starting batteries like those in your vehicle. Donald3d:. 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. Structural damage to the battery is a great possibility. It says that a time of 13.5 hours is needed to bring a 32AH battery back to full charge from 50%. There are many possible issues that could lead to your car battery taking a long time to charge. So it is pretty much crucial to know how to charge a deep cycle battery properly. I essentially extrapolated their chart that they use for their 1.5 amp charger to get a baseline for all of the other values. This slowly evaporates the electrolyte through electrolysis (overcharging). Larger vehicle batteries can be charged in 50 hours at 2 amps, or 10 hours at 10 amps. Knowing how long you might be without a vehicle and making plans around that might make your day a little better though. Double the times if 100% discharged. Charging your battery at 12 volts and 20 amps will take five hours to charge a 100 amp hour battery. It’s not recommended to use this large of a charger. How long does it take to Charge a car Battery with a Trickle Charger, Four stages (initialization, bulk and absorption mode and float mode). Stage 1 battery charging is typically done at 30%-100% (0.3C to 1.0C) current of the capacity rating of the battery. Double these times if the battery is fully discharged. Truck batteries and other larger vehicles might get up in the 80 amp hour equivalency range. I have a 6V 4.5 battery and a solar panel 6V and a trail Camera 1000-2000ma how long will it take to charge the battery or can I put a 12V solar panel on a 6V Battery and the camera will it blow it up or not the 12V solar panel vpm-17.3 VDC VOC-21.3 VDC IMP-0.3 Amps ISC.0.33 Amps the camera 1000-2000 MA converter on it. Now back to your question, how long to charge a 200ah,12v battery, it all depends on the charger you're using and to which voltage you last consumed your battery. To get the AH, I do: X / 19.25 = 1.2 ==> X = 1.2 * 19.25 ==> X = 23.1AH ==> 23.1 *2 = 46.2AH. The estimated time taken to charge a battery using solar is equal to the sunshine hours for a location when you use the solar panel watts provided by the calculator. If this doesn’t work, you can repeat the process a couple of times for longer durations when connected to the donor vehicle. I've been an avid hobbyist in these fields for over 5 years and I enjoy sharing what I've learned in a way that's geared for beginners and those just getting their foot in the door with small engine repair and prepping. 200AH battery (1 unit) 3. I’ll let you get back to what you were reading! If you need to swap out a car battery for the first time or disconnect it for some reason, you may find yourself wondering which terminal needs to be disconnected first. To do that with a MPPT controller requires 20 amps x 25 volts = 500 watts usin ginexpensive GT panels. A trickle charger usually operates at around 2 amps and it is going to take a long time to charge up your 12 volt car battery (read our full guide here). Working with electricity can be deadly if you are not careful. And How long to charge a deep cycle battery? 0 0. 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