The thermostat may still say "low battery" after replacing the batteries with new ones because the issue could be with the thermostat itself, such as a malfunction or a problem with the battery connection. It is recommended to check the battery contacts and ensure they are clean and properly aligned, or contact the manufacturer for further assistance.
If your thermostat is showing a blank screen even though it has no batteries, it could be due to a power issue. Check if the thermostat is properly connected to the power source or if there is a problem with the wiring. It is also possible that the thermostat itself is malfunctioning and may need to be replaced.
Discharging it to 0V (ie. absolutely empty). And not battery, but "cell" (even a small AA or AAA battery is consider a "cell" - think Duracell).Batteries are usually made up of individual cells (like car batteries, RC batteries etc.), and even if not all of them are discharged completely, if even just one cell reverses polarity, it will do irreversible damage to the battery.
Yes, batteries lose energy over time even when not in use due to a process called self-discharge. This occurs as a result of internal chemical reactions that continue even when the battery is not actively powering a device.
Rechargeable phone batteries are built to last a long time. However, a phone battery, even one that is rechargeable eventually runs its course and requires replacement. Fortunately, most phone batteries are easy to replace. Always buy a high quality replacement battery that is similar to the battery replaced to avoid future problems.
The spring needs to be inside, it's purpose is to to force the battery(ies) to meet the cap. It is not too difficult to insert batteries in it, even if the pen requires several flat batteries. You just have to insert a battery, one at a time, then keep your finger on the battery, to keep it from dropping. Then you slid another battery under your finger. You repeat this until all required batteries are in the pen. Keep holding your finger on top of the opening. Then comes the tricky part: you have to slid the cap from side on the battery, replacing your finger. If this does not work for you, you can use the blade of a knife to hold the batteries in, flat on top of the tube, and then let the cap slide in and the knife-blade slip out. Do notice, that all the flat batteries have to be oriented same way. Most commongly flat side towards the cap and the 'bump' towards the tip of the pen.
The spring needs to be inside, it's purpose is to to force the battery(ies) to meet the cap. It is not too difficult to insert batteries in it, even if the pen requires several flat batteries. You just have to insert a battery, one at a time, then keep your finger on the battery, to keep it from dropping. Then you slid another battery under your finger. You repeat this until all required batteries are in the pen. Keep holding your finger on top of the opening. Then comes the tricky part: you have to slid the cap from side on the battery, replacing your finger. If this does not work for you, you can use the blade of a knife to hold the batteries in, flat on top of the tube, and then let the cap slide in and the knife-blade slip out. Do notice, that all the flat batteries have to be oriented same way. Most commongly flat side towards the cap and the 'bump' towards the tip of the pen.
Your Game's internal battery has died. It won't keep time anymore either. Unlike modern games whose save file is in flash memory, the saves in Gameboy color and older games are in RAM and kept their with current from a battery. That's why they sometimes have no save even when they still save correctly - the battery is starting to go. There a several guides on Google for replacing Gameboy Game batteries. Be careful with Crystal as the cartridge is not only screwed together better than most games, the battery is harder to remove. Oddly enough, Nintendo never intended for anyone to be replacing batteries in their cartridges.
Batteries go bad. Even lithium ion batteries. You need to get a new battery. Do not leave it plugged in all the time.
No, you don't ever change battery water. Batteries have hydrochloric acid in them, not water, even though you use water to top them off. Do not mess with the acid in your battery. You should always use distilled water to fill your batteries.
No. Every phone manufacturer has different batteries and some phones even from the same manufacturer have different batteries. You must find a phone battery that is for your phone.
AGM batteries are more expensive. AGM batteries can be purchased by batteries plus or even eBay. You should consult with your car dealership as well, to insure you are purchasing the correct one.
Whether the key is on or not, you have a low battery and it might need replacing.