I've had an Acer Aspire 5535 for around 2 years I'd say, and I've noticed over the last 6 months or more that my battery is dying out very quickly. It'll be on charge for a while and I'll use it with it not on charge, and it'll require charging within 10mins of use. And sometimes, it gives a very brief warning to plug into the mains and then it'll switch off. I use the laptop on my bed but I place it on a clipboard to avoid it heating up etc but not sure whether this has speeded up the battery's usage or not. Is there anything that can be done or will I need to get a new battery? Thank you.