Should you see a reading of at least 12.6 volts, then your battery is fully charged. Fully Charged is a leading UK retailer of eBikes and electric bikes. Saw this as I was looking for a SG to SOC chart and thought I would make a couple of comments. Israeli company StoreDot announced Tuesday that in a landmark achievement in the electric vehicle industry, it had managed to develop the world’s first car battery that can be fully charged … I have 4 100 ah sla AGM batteries in series/parallel for 24 volt and warned to make I didn’t discharge them less than 80% is night time my solar charge controller is done for today,so I can’t start charging back up till the AM. Which explains why batteries that “go dead” never recover fully. A battery that is left to drain or remain discharged for … Then again, I feel it urgent to bear in your mind that both overcharging and fully draining out of charge is not healthy for the battery. With Battery Notification, you don't have to worry again about leaving your device while the laptop/tablet is being charged. Your 13.2 reading is quite good. I dont call the voltage reading open circuit voltage, I call it “resting voltage” and if done right as you outlined it is seat of the pants but still somewhat accurate. Set the low on voltage You will also see a red, positive clip and a black, negative clip. The one thing I would disagree with somewhat from your well written article is concerning the accuracy of state of charge meters. A meter reading of 12.2 volts or 12.0 volts will indicate a charge rate of 50 percent and 25 percent, respectively. Thirdly using anything other than absolutely pure “battery water” (no minerals) will permanently damage the battery. Be aware that if you are testing your battery in cold weather, the voltage reading of a fully charged battery will be slightly lower. This is very informative thanks. Arthur Barnhouse has written numerous short stories, contributed content to various websites and was an invited speaker at a university symposium on creative writing. The correct fully charged specific gravity of your 6-volt deep cycle battery is: 1.265 (will vary dependent on battery age, condition and ambient temperature) Battery life is directly related to keeping your batteries fully charged. 90% 37.86 You can use the app to get rid of extra apps that add little to no value to the device’s system and affect battery life. Went 8 days without using the generator and now well into my next 8 days. Never short a battery to fully drain it. It is set to equalize every 30 days, however sometimes I have to do it more than that, to bring them all back to green. Your State of Charge chart does not show for a 36v system. Specifically for series batteries. I agree with the terminology that ‘resting voltage’ is a more accurate representation…, Thank you for the PDF chart, very useful for AGM battery. (( Battery Hydrometer ))View the most popular hydrometer on amzn. You must attach these clips to the corresponding terminals on the battery. This is helpful information, thanks for gathering all the data! However for many batteries this is difficult or impossible (AGM batteries, for example). Connect the positive clip first, followed by the negative. But a good generalization. A discrepancy of between … For example, if the temperature is 30 degrees Fahrenheit, the reading will be approximately 12.5 volts. Read the … Then allow the car battery to rest, unused, for about 12 hours or overnight and retest. But please read through the caveats in the article. The … Running a few appliances just to test it. My numbers came from averaging the voltage lists from various manufacturers (each of which were fairly close to each other). SUPPORT MSB at no extra cost to you: Terms Of Use However I averaged all of them together to come up with a chart which represents what I believe to be a good GENERAL indication. The Trojan sounds like it is getting old, and needs more frequent watering and equalizing to keep it functioning. Many battery chargers deliver two to six amps (some allow you to choose the amperage level) and will take at least several hours to recharge a dead car battery. We offer complete battery services for your industrial needs. This means that the battery must NOT be under load and it must NOT be charging. In other words a heavier load for shorter periods. My other set up has about 750 watts of poly panels, run through a xantrex 30 amp charge controller charging a trojan 12 volt golf cart battery. For example, as you charge a battery, the voltage rises, putting it under … Harmful, but continual discharges to those levels will shorten battery life batteries... 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