I am getting a message that says my backup battery is low and needs recharged or replaced. Where is the backup battery and how do you change it.

If your Sam4 ER-390M cash register is displaying a "Warning Power Fail" message, it means that the register has detected a power outage or an interruption in the power supply. Here are some steps you can take to fix this issue:

1. Check the power supply: Ensure that the cash register is properly plugged into a working power outlet. If the power supply is shared with other devices, make sure that they are not causing any power surges or fluctuations.
2. Check the battery backup: The Sam4 ER-390M cash register comes with a built-in battery backup that can keep the machine running in case of a power outage. Check the battery backup to see if it is functioning correctly. If the battery backup is not working, it may need to be replaced.
3. Reset the cash register: Turn off the cash register, unplug it from the power source, and wait for a few minutes. Then, plug it back in and turn it on. This will reset the cash register and may resolve the issue.
4. Contact customer support: If none of the above steps work, you should contact Sam4 customer support for assistance. They can provide further guidance on how to resolve the issue.

It's worth noting that if you experience frequent power outages or power supply fluctuations, it can cause problems with the cash register's electronic components. In such cases, you may need to consider using a voltage stabilizer or a UPS (Uninterruptible Power Supply) to protect your cash register and other electronic equipment.

Hi,
Normally its the problem with the Battery. Make sure that your purchased battery is good. After that check your adaptor. You are not mentioned about battery backup. If you are getting the backup pls reinstall the operating system. Again if it showing you need to replace motherboard...

Good Luck

Buy a new calculator

This may happens sometime with charger ,as i have the same problem and i replace the charger---i shown the mbile HTC authorised center

Hi. Actually, on pocket pcs there's a backup battery onboard, but in your case maybe backup battery is dead. So you can have that changed or you can charge your PDA on regular basis. Hope this helps.

I have the same problem with mine!! Had it about 14 months now too!! Glad I'm not the only one... I don't know what to do! I have gotten brand new rechargeable batteries and instead of getting 250 shots, I only get like 20!

that's a sure sign that you are in low battery condition, and the inverter is approaching shutdown. You may need to either deep recharge the batteries, with NO load, or replace them completely.

Got Backup?

The MobilePro 900 back up battery is low and should be replaced. The battery is a CR2032 coin-cell battery, which is very common and can be purchased at most department and drug stores. Refer to section 1-7 of the "MobilePro 900 Handheld PC's User's Guide" for detailed replacement instructions.

The back up battery should be replaced immediately upon seeing the message "Backup Battery Very Low - Your back up battery is very low or missing. Data loss may result from failure to replace the battery very soon. Consult the manufacturer's instructions for directions on replacing or charging the backup battery." Warning: It is important to note that the back up battery in the MobilePro 900 is not rechargeable, thus, to prevent data loss, it is important to change the back up battery immediately when this message is displayed.

No the coin cell backup battery is not rechargeable. If the MobilePro 900 back up battery is low it should be replaced. The battery is a CR2032 coin-cell battery, which is very common and can be purchased at most department and drug stores. Refer to section 1-7 of the “MobilePro 900 Handheld PC’s User’s Guide” for detailed replacement instructions.