On my ecoworthy 20 amp mppt, I had to raise the bulk voltage to 15.5 volts to get 14.4 volts on the battery terminals. To compensate you would have to raise the bulk voltage on your controller to a higher voltage. For instance the controller would read 14.4 volts but the battery terminals would be around 13.8 volts (float voltage), the controller thinks the battery is fully charge and switches to float voltage (13.2 volts) and the battery hasn't even got a full charge. Evey charge controller I used had too much voltage drop from controller to battery. You mention that you charge your battery with solar when out on the road, the solar controllers are very unreliable for charging any batteries. With these you can monitor how much amps you are using, if you use 20 amps, then next day you know you need to put 20 amps back in, if your charging system isn't fully charging your battery you know you got a problem. I used these on my lifepo4 but they also work on lead acid. My advice is get either a TR16 coulomb counter or tk15 coulomb counter (both cost about 30 dollars for 50a version) with this meter you program your battery amp hours and then it counts the amps in/out of battery. I should not let the battery discharge more than about 50%? But I seem to hit 60% very quickly in the field (at least based on the cheap gauge). When I do use my multimeter my understanding is 12.7 is 100%, 12.5 is about 80%, and 12.2 is about 50%. Is there a better way to monitor state of charge when out camping and charging off the panels, beside bringing my multimeter with me? Should I be doing this w my batt or disconnecting once fully charged as I have been?īattery monitoring - I usually rely on the percent charged feedback from a small cheap gauge installed on the batt box when out camping. The Genius 3500 supposedly has a "maintenance" mode and can be hooked up continuously. Otherwise I'll get a surface charge that looks like its 100% but fades quickly. Is 3.5 amps enough for charging this battery? I have read 2-3 amps is ok (just slow), have also read it should be 10 amps to get a true full charge on deep cycle batts. I check it periodically and plug it back in to charge anytime the battery shows below 85% on the little batt box meter (this seems to be happening faster then it should when not in use).Īt home charging - I use a NOCO Genius 3500 (3.5 amp) charger. Typically I charge the battery at home on a NOCO Genius charger to 100%, then let it sit in the trailer hooked up to the fuse box but disconnected via marine disconnect switch. So looking for some very basic help and info on how to properly charge, maintain, and check my deep cycle battery.īattery - Interstate SRM-24, flooded, 81Ah, 1 year old. Now I'm thinking the issue is a combination of my charging and monitoring equipment, and my knowledge. Had Interstate load test it overnight and it seems ok. Battery monitoring can detect problems in early stages and eliminate guessing when planning new applications.Been having charging issues with my Interstate SRM-24 deep cycle batt that I thought meant the batt was bad (battery seems to discharge quickly even when not in use). Information such as utilization, temperatures, cycle counts and performance are monitored 24 hours a day. All you need is a tool which is robust enough to handle a tough environment, simple to use, and affordable.Įxponential Power offers a wide range of industrial battery monitoring products for the material handling industry. If batteries are discharged/charged to optimum level and watered properly, you can increase productivity and extend battery life. As a result, a fault condition may exist but will not be recognized which can result in component damage and downtime of equipment.Īs equipment control systems get more sophisticated, a poor battery can cause fault conditions and some fault codes that are difficult to diagnose. Surface voltage can “confuse” battery discharge indicators or controllers. In opportunity and fast charging environments, battery management becomes even more critical. When batteries are undercharged, used with low water and/or with elevated temperatures, not only is the life of the battery shortened but it can cause malfunction of the equipment and affect its performance.
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