I bought my PnS camera using AA batteries in 2007 but seldom use it (at most once every few months) in 2007 and perhaps every 6 months in 2008 and 2009, so my 4 x Sony NI-MH rechargeable batteries (NH-AA 15/51 HR6 2500 mAh) are also put aside and not charged. In all, I reckoned I recharged my batteries perhaps less than 10 times since I bought them.
Recently, I tried to use the batteries and found them flat and thought they lost all their charges. So I put them in the charger and refresh, and then recharged them fully. I put them into the camera and it showed "full bar" battery life. But when I used my camera to take about 10 pictures (with Flash) only, the battery life immediately dropped to half...
I googled around and read NI-MH batteries go dead if not charged frequently and also after 1.5 or 2 years, they are usually more or less dead (perhaps even with little or no usage). Is this true? Are my batteries dead/dying? Or I need to refresh them again using the charger? Or the power consumption is expected? Time to get fresh batteries?
Recently, I tried to use the batteries and found them flat and thought they lost all their charges. So I put them in the charger and refresh, and then recharged them fully. I put them into the camera and it showed "full bar" battery life. But when I used my camera to take about 10 pictures (with Flash) only, the battery life immediately dropped to half...
I googled around and read NI-MH batteries go dead if not charged frequently and also after 1.5 or 2 years, they are usually more or less dead (perhaps even with little or no usage). Is this true? Are my batteries dead/dying? Or I need to refresh them again using the charger? Or the power consumption is expected? Time to get fresh batteries?