Hi, I have just bought a new 5A/h battery from dry power. Cannot contact them because message I get is server misconfigured.
Part of the specifications on the battery is that the standby use is 13.5-13.8v. Cycle use is 14.4-15v. I take this as meaning it wont harm the battery if you have a charging voltage equal to the cycle use? I have found that after disconnecting the charger the battery voltage immediately drops from the cycle voltage. My understanding then is that the battery voltage will then drop to the standby use and then hold at that voltage?
When I got the battery the voltage was only 12.6v which is below the standby use. I assumed that the battery needed charging.
I connected it to a 13.86v source. The charging time was 4.5 hours and the initial current was 0.378 amps dropping to 0.107a at the end of the charging period.
After disconnecting the charger I watched the no load voltage of the battery over a period of time. It started at 13.42v (already below the standby use) to 12.99v 15 hours later.
Is this battery faulty as it does not hold at the standby voltage? Or perhaps I needed a longer charging time? The web site of dry power is of no help in this regard.
The battery is to hold an electric gate lock shut. The operating current (momentary) is 1.2 amps and continuous current 175ma.The jaycar catalog quotes a 12v 4.5A/h battery as having a 20 hour rate of 200ma.
When I used the battery to operate the lock the voltage immediately dropped to 12.76v. 6 hours later the voltage had dropped to 12.31v. So there is no way this battery is going to hold the lock closed all night.
Today I am going to see another battery supplier who states the batteries are fully charged when you get them. I will check the voltage and see if it is at the srandby voltage stated on the battery.
Part of the specifications on the battery is that the standby use is 13.5-13.8v. Cycle use is 14.4-15v. I take this as meaning it wont harm the battery if you have a charging voltage equal to the cycle use? I have found that after disconnecting the charger the battery voltage immediately drops from the cycle voltage. My understanding then is that the battery voltage will then drop to the standby use and then hold at that voltage?
When I got the battery the voltage was only 12.6v which is below the standby use. I assumed that the battery needed charging.
I connected it to a 13.86v source. The charging time was 4.5 hours and the initial current was 0.378 amps dropping to 0.107a at the end of the charging period.
After disconnecting the charger I watched the no load voltage of the battery over a period of time. It started at 13.42v (already below the standby use) to 12.99v 15 hours later.
Is this battery faulty as it does not hold at the standby voltage? Or perhaps I needed a longer charging time? The web site of dry power is of no help in this regard.
The battery is to hold an electric gate lock shut. The operating current (momentary) is 1.2 amps and continuous current 175ma.The jaycar catalog quotes a 12v 4.5A/h battery as having a 20 hour rate of 200ma.
When I used the battery to operate the lock the voltage immediately dropped to 12.76v. 6 hours later the voltage had dropped to 12.31v. So there is no way this battery is going to hold the lock closed all night.
Today I am going to see another battery supplier who states the batteries are fully charged when you get them. I will check the voltage and see if it is at the srandby voltage stated on the battery.