So I went down to Costco to get an Interstate battery, which I personally think is the best value and quality batteries you can find. The BatteryĪt this point I didn't even bother testing it, I knew I was going to replace it. I will be going back with them and trying to get some partial refund for this, as I don't think its fair that I spent so much money, only to end up with a smaller than required battery. So once again the installers got something wrong, and shorted me on the battery. I thought this battery was quite small, so I looked at the manual for this generator and it states you should be using a 525cca battery.Īnd, the part number for the correct Generac battery also comes back to a 525CCA battery. This was a concern right away, as my neighbor has a smaller air cooled generator with the same battery, and only got 1 and a half years out of it. So decided to needed to check out the battery.įirst thing I noticed is that it has a small, crappy 400CCA Continental battery. And it also cranks slower than it used to when it was new. Lately, I've noticed thanks to Genmon, that the battery charger has been on more often than not. If you require further assistance please contact us at information on our other products and power tools, visit: .If you read my other posts you know that around a year ago I got a Generac RG027 Generator. You can find a detailed description of how to charge the battery in the instruction manual supplied with your battery.Initial charging is always recommended - never a quick charge.A new battery after activation is approximately 80% charged.We recommend that you ensure your battery is fully charged before fitment to ensure long service life. a 4 Ah battery requires a 0.4A charging current). The recommended charging current is 10% of nominal capacity in amperes (e.g. To ensure that the battery can supply its stated starting power, it first needs to be fully charged. Once you know the exact voltage, use the table below to gauge the state of charge. The best and easiest way to test a battery is by using a voltmeter or multimeter to measure the voltage. Stop charging if the battery becomes hot or acid escapes!.When charging is complete, first turn off the charger.Do not turn on the charger until the battery has been fully connected.Connect the positive battery terminal (+) with the positive charger terminal, and the negative battery terminal with the negative charger terminal.Never charge frozen batteries or batteries with a temperature above 45˚.For every 0/1 V difference to 12.7 / 12.8 V, the battery should be charged for 1 hour.The open-circuit voltage after charge should be 2.12 - 2.13 V/cell.This overcharge should only be used for a short time period to avoid water loss.Use a charger with IU characteristics and a higher charging voltage (2.6 V/cell).Charging to avoid acid stratification (not needed for AGM).An electronic voltage-controlled battery charger, preferably based on an IUoU charge profile, is recommended.Never use a battery charger without an automatic shutoff.Always check that the battery charger is suitable for the battery.Fully recharge the battery as soon as possible following each discharge.Instructions on charging a battery safely Here are some tips to help you safely charge a 12v battery on a diesel generator: It is important to follow the correct steps to ensure safety and prevent potential damage to your battery.
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