Rome Tech CR2032 CMOS Battery for Dell Latitude E5440 E5450 E6440 E6420

easy to install, perfect fit, excellent functionality,

It does actually fit a Dell Precision 7720. I didn't ty to measure the voltages...I was having a problem with the computer not wanting to boot when it was cold out. I changed the CMOS battery...because I had bought the thing as a refurbished unit and I really don't trust refurbishers for much other than they are going to make money. Well...after changing the CMOS battery the computer was still giving me problems with refusing to boot. No boot no charge, no power light...so I took the bottom back off and tried fiddling with every jack connector in the power supply circuit. Took me two tries...but it seems to be working perfectly now. Jack were the power supply hooks into the main board. Ok, but reviewing a battery...well, the shipping was a bit odd...came from Shanghai..or is it Janghai? Which is pretty far from Rome. But it hasn't exploded and burned my Dog alive in the house fire, so it must be the good kind.

My Dell Latitude 7390 2-in-1 wouldn't remember the time of day. The light on the front edge blinked white and orange in the pattern which indicated bad CMOS battery. The wires on this replacement battery are longer than on the original, but there was enough room inside the case to route the excess length. Now my Latitude remembers the date and the light on the front edge doesn't blink.

Excelente

This is my 2nd purchase of Rome Tech CMOS batteries for my laptop. Rome Tech has just about every battery type you'll need. The biggest and most important part is making sure you get the right battery first. Rome Tech asks you for your laptop make and model and they will match you with the correct battery. If you're pretty good at working with small screws and taking apart laptop cases, then you'll save a lot of money by doing this yourself.

I have tried multiple CMOS batteries from multiple makers that claim are compatible with the AW17 r5 however none are anywhere near long enough for the proper placement on the motherboard. This one worked perfectly. To the manufacturer. Add compatibility to this list for the Dell Alienware 17 r5 laptops to this and drop it from your other listing it's a waste of time. Other than that works as it should. Thank you.

Did it's job with no issues

Got this to replace the cmos battery in my Dell 7280 laptop. It seemed silly to me to not just use a normal coin cell battery, but this was far easier than trying to remove the wiring from the OG battery and trying to solder everything back together. Installation was just as easy as the removal.

Ce que j'ai reçu est une pile quelconque dans un sachet plastique sans même du scotch double face.

Pues pense que estas pilas de la bios son todas iguales asi que pedi la mas barata y cuando llego no era ni el mismo tamaño ni el mismo voltaje ni el mismo puerto. Asi que corte y empalme la pila nueva con el puerto antiguo, encendi el ordenador y funciono!. Llevo varios meses y el ordenador no se ha estropeado ni nada. Esto lo digo a modo informativo, la responsabilidad de hacer tales experimentos es vuestra, no me hago responsable de lo que pueda pasar. Aislar bien los cables empalmados para evitar cortos, probarlo primero en algun ordenador viejo o incluso abortar la operacion si no se tiene claro lo que se hace es bastante recomendable. Si teneis miedo de dañar vuestro ordenador lo prudente es pedir la pila especifica.

Generic battery that you can get 10 pieces for almost the same price. No markings or anything apart from CE sticker. It works, but I’m not sure how long it will last though. Don’t bother ordering this. Better get a 10-pack. At least you will have some spares when it dies.

Funciona perfectamente en mi Dell Latitude D630.

La pila funciona perfectamente, pero tuve dificultades para instalarla, la clavija blanca no estaba bien , parecía algo más grande de lo que debería, tuve que rascarla un poquito con un bisturí que uso para hacer maquetas para poder encajarla. La puese en un Lenovo Thinkpad L390