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Back-up Battery Voltage
- Thread starter Eric
- Start date
- Joined
- Mar 23, 2005
- Messages
- 13,226
The EFIS has a switching power supply inside that runs at over 16V anytime there is 10-30V on the input pin. The supply is able to step up the voltage from 14V to over 16V in order to charge the battery. As long as the EFIS has 10-30V, the battery can charge fully.
R
Ron Belliveau(Guest)
Guest
Hello
I've apparently left the unit on inadvertently and killed the internal battery on a EMS 100. I'm installing it so the alt. hasn't been run and I'm using a battery charger to keep up the AC power. The voltage on the EMS reads 12.3V and (13.4 with the charger on). The "I" voltage reads 10.3 V. I have direct power ( always on)on the Keep Alive power pins. I have been trying to bring the internal battery voltage up for a couple days with not much luck. How long does it take to bring the internal battery back up ? The unit internal power is so low that the unit dies immediatly when main power is cut. Where do I start looking first?
Thanks Ron
I've apparently left the unit on inadvertently and killed the internal battery on a EMS 100. I'm installing it so the alt. hasn't been run and I'm using a battery charger to keep up the AC power. The voltage on the EMS reads 12.3V and (13.4 with the charger on). The "I" voltage reads 10.3 V. I have direct power ( always on)on the Keep Alive power pins. I have been trying to bring the internal battery voltage up for a couple days with not much luck. How long does it take to bring the internal battery back up ? The unit internal power is so low that the unit dies immediatly when main power is cut. Where do I start looking first?
Thanks Ron
- Joined
- Mar 23, 2005
- Messages
- 13,226
Hi Ron,
Do you actually mean that EFIS-D100? Our EMS systems do not have a battery backup option, nor is there a product called the EMS 100. Knowing exactly which product you have will help us troubleshoot the issues you are experiencing.
As a first step, look up your firmware version by going to SETUP, VRSION in the EFIS system and post it back here.
Next, try disconnecting all power (including keep alive and the internal battery connector under the access plate) from the unit to fully reset it. Then reconnect the battery and apply master power. When master power is applied, you should slowly see the "I" voltage read out creep up over the course of a short period of time; a half hour should be more than enough to see a positive change.
Let us know what you come up with.
Do you actually mean that EFIS-D100? Our EMS systems do not have a battery backup option, nor is there a product called the EMS 100. Knowing exactly which product you have will help us troubleshoot the issues you are experiencing.
As a first step, look up your firmware version by going to SETUP, VRSION in the EFIS system and post it back here.
Next, try disconnecting all power (including keep alive and the internal battery connector under the access plate) from the unit to fully reset it. Then reconnect the battery and apply master power. When master power is applied, you should slowly see the "I" voltage read out creep up over the course of a short period of time; a half hour should be more than enough to see a positive change.
Let us know what you come up with.
R
Ron Belliveau(Guest)
Guest
You are correct, I did mean the EFIS D-100. I looked up which version I had and found 01.02. I also removed the internal battery for a few seconds and reinstalled it. On initial start up the I voltage did go up from 10.3 v to 10.8 but slowly dropped to 10.1 volts. It remained there with the unit on and main power applied for about an hr when shut things down and left the hangar. What next please?
- Joined
- Mar 23, 2005
- Messages
- 13,226
It sounds like it is probably the battery, but there is a chance it could be the EFIS.
We can do one of two things from here. If you send the EFIS along with the battery for troubleshooting, we'll definitely be able to get it fixed in one shot. Alternatively, we can start smaller by having just the battery back - but of course if we don't find anything wrong with it you would have to send the EFIS in for further troubleshooting. Give us a call at 425-402-0553 to set up the warranty return authorization.
We can do one of two things from here. If you send the EFIS along with the battery for troubleshooting, we'll definitely be able to get it fixed in one shot. Alternatively, we can start smaller by having just the battery back - but of course if we don't find anything wrong with it you would have to send the EFIS in for further troubleshooting. Give us a call at 425-402-0553 to set up the warranty return authorization.
R
Ron Belliveau(Guest)
Guest
We do have two units here, would you recommend swapping the batteries to find the problem?
- Joined
- Mar 23, 2005
- Messages
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Ron,
If you have two units, swapping the batteries would be a great test. This should quickly tell us if the EFIS is failing to charge the battery or if the battery itself is bad.
The batteries come out easily- just remove the small door and the connector is right there. Unplug the connector and the battery will slide right out.
Let us know your results and we'll get you whatever you need to get this fixed right away.
If you have two units, swapping the batteries would be a great test. This should quickly tell us if the EFIS is failing to charge the battery or if the battery itself is bad.
The batteries come out easily- just remove the small door and the connector is right there. Unplug the connector and the battery will slide right out.
Let us know your results and we'll get you whatever you need to get this fixed right away.
R
Ron Belliveau(Guest)
Guest
We did the swap and the battery that was not charging went from 10.3 V to 0 V . A while later it was back to 10.7 and has slowly gone up to 14V or so. We are charging our ac battery with a charger and have ac voltage at about 12.5 V. The other unit is now at 15.8 V on the internal I reading. Any thoughts?
Ron
Ron
- Joined
- Mar 23, 2005
- Messages
- 13,226
I want to make sure that I understand everything.
First, on the "bad" battery, which is now in a different EFIS:
1) Did the battery stop charging at 14V, or is that as far as you've observed it so far? It might take as long as a full day for the battery to reach its peak charge of over 16V.
Next, on the the other, good battery that is now in the suspect EFIS:
2) Was 15.8V also the charge level before it was put in the suspect EFIS?
3) Is this EFIS connected to external power?
4) Has the "I" voltage gone up, down, or remained the same over the course of a few hours?
First, on the "bad" battery, which is now in a different EFIS:
1) Did the battery stop charging at 14V, or is that as far as you've observed it so far? It might take as long as a full day for the battery to reach its peak charge of over 16V.
Next, on the the other, good battery that is now in the suspect EFIS:
2) Was 15.8V also the charge level before it was put in the suspect EFIS?
3) Is this EFIS connected to external power?
4) Has the "I" voltage gone up, down, or remained the same over the course of a few hours?