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1 An installed battery is not identifiable
Hello everyone,
A friend managed to get an old Latitude E5570 for cheap but it had a completely dead battery and missing power adapter. I'm trying to fix it as a challenge, so I got a new battery replacement, an (allegedly) OEM charger and a new CMOS battery (just in case).
Replacing the battery I immediately managed to power on the laptop and install Windows, but from the bios I can see that neither the battery nor the AC adapter are being recognised. The battery is an aftermarket one, while the AC adapter has the dell logo on it and was sold as genuine from here, although the laptop still doesn't recognise them.
Looking around I read that a bios update should fix the issue, so I installed the latest bios from the Dell website. I had to use the /forceit command to install it because it didn't like the lack of AC adapter.
The error I get from the bios is "an installed battery is not identifiable [...]" and then it goes on saying that it refuses to charge it. The battery is now slowly discharging and I'm afraid I won't be able to do anything on it anymore, once it's completely dead. I tried to power on the laptop without battery connected, but I only managed to get it to start up once and never again, I don't understand why. I also tried to do the reset procedure where you unplug battery and CMOS battery, hold power button, plug in CMOS battery and plug in AC adapter, but that only seems to work once too.
How do I get this laptop to charge properly with its new battery? Thanks!
crwdns2934109:0crwdne2934109:0
Hi,
Try uninstalling the battery drivers in Device Manager and then restart the laptop and check.
To get to Device Manager in Win 10 , press the Win key + x key (both together) and click on the Device Manager link that shows in the menu.
In Device Manager, right click on the battery entry and click on Uninstall and follow the prompts.
Windows will auto install the drivers again once the laptop is restarted
crwdns2934271:0crwdnd2934271:0 jayeff crwdne2934271:0
@jayeff Thanks, I already tried and it didn't make a difference. Shouldn't the charging process be independent from drivers? The laptop doesn't even charge when it's powered off and simply doesn't recognise any charger.
crwdns2934271:0crwdnd2934271:0 Rob Vongola crwdne2934271:0
@vongola
It should be.
Looking at an image of the charger it is a simple one i.e. only DC +ve and -ve applied to laptop, plus a third wire presumably used for ID.
Have you checked that the charger's output voltage is OK at the charger plug i.e. +ve 19.5V DC on the centre (inner) connector of the plug when measured between the inner and outer connector rings?
Also check that the voltage is OK on the red and black wires of the cable connected to the DC-In jack at the motherboard
crwdns2934271:0crwdnd2934271:0 jayeff crwdne2934271:0
@jayeff Hi Jayeff, I have checked with a voltmeter and I get exactly 19.5 V on the back of the connector (just on the motherboard). What else could it be?
crwdns2934271:0crwdnd2934271:0 Rob Vongola crwdne2934271:0
To add to the current problem, I tried to reset the BIOS by removing the CMOS battery, main battery, hold power button and plug in everything again. After the reset, I get the following message: "WARNING: If a service tag was just installed, you will need to shut the system down and unplug the AC adapter if present. Re-insert the AC adapter and power on the system to allow for proper functionality. If a service tag was not just installed, then the primary battery is not identifiable. This system will be unable to charge the batteries until this battery is removed.".
To add to that, if I remove the battery and try to turn on the laptop without it, the laptop powers on for a second or two and then goes off again. So it is definitely getting "some" power from the AC adapter. I tried 4 different AC adapter that I have around and the laptop does the same thing with all of them...
crwdns2934271:0crwdnd2934271:0 Rob Vongola crwdne2934271:0