My shaver doesn't stay charged very long

How old is it? I ask as if the batteries are past their best, they can get to the point where they never actually take a full charge.
Try cycling the batteries. Once charged, turn on the razor and leave it on until batteries are completely flat. Do this in one go without switching it off. Then re-charge for 12 hours and see if this resolves your problem. If it doesn't help, and razor is older than 3 years, then you may need to replace batteries.

I would contact the company that made it customer service to check on a warranty, or the store you bought it from they are usually pretty good with defective stuff, it's not like you just don't want it anymore, it does not work. Also if you paid by credit card some of them have matching warranty time frames, if the razor had 90 days they add another 90 or a year whatever the original warranty was they match it, it has been very helpful for me over the years. I hope they will work with you, stay calm and very polite on the phone they will work with you longer to resolve your issue!

Find your product

First thing, reset the outlet. That's a common thing looked over. Next (if that doesn't work) is pull out the warranty papers because if it isn't the outlet, then it's the product. If you have had it for less than a year, they should allow you to use your warranty and have them fix it.

Model MS900 has not been made for several years. If you just bought it, it is old stock and it sounds like the batteries have degraded

This model is several years old...probably about 7 years old and the battery is probably dead from age. The easiest fix is to purchase one of the items linked below from shaveroutlet.com

http://shaveroutlet.com/remington-ms2370-lower-unit-p-208.html

http://shaveroutlet.com/remington-ms2100-lower-unit-p-209.html

Your shaver does not have a sensor that identifies when you change the head. It is simply on a timer. Depending on your specific model, the light may simply go off after a couple of weeks or you may have to reset it with the power button. Refer to your user manual for details

if interested, I would like to buy your shaver for spare parts?

[email protected]

I just had the same problem, where the top of the charger would not stay down. I tried a spring clamp to keep it in place, and that works like a charm! Try it!