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It seems like the battery life has become shorter now after I use my calculator for about 5 years. With fully charge batteries it could run at least 6 months, now it's about only 2 months; I use it as frequently as I used to. Is there anyway to fix it? Thanks.
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This depends upon the quality of the car battery, and how you take care of it. If it is in a car and the car is driven daily, you should expect the battery will last 5-7 years.
If the car is not driven for extended periods of time, a battery tender should be placed on the battery, and failure to do this can ruin a battery. If it is a boat battery, during the off season the battery should be removed from the boat and a battery tender put on the battery.
If your battery has removeable caps on the top, make sure the battery is filled to the interal ring with distilled water. It is especially important to do this before charging a dead battery.
Do not store batteries directly on cement (place a piece of 2x4 under it). I know why, but batteries stored directly on the cement seem to die much faster and have a shorter overall life.
On the Galaxy display you could see what is the remaining battery life time as calculated by the software. Normally after you replaced the batteries you are supposed to reset this counter using specific software by the manufacturer. According to your information you have replaced the batteries 3 times in 5 years period. This is not normal. Nevertheless since the last replacement in 2008 it appears that the battery are now reaching the end life, which is generally 3-5 years life expectancy.
I would review the following of the assumption that the UPS is fully operational and the charging system is working.
1. Do a load test or a battery impedance test to verify the batteries are good 2. I would look at the battery life time specification, whether it is 3-5 years, 5-7 years ect. 3. Check the room temperature, every 10 degrees Celcius above 25 deg reduces battery life time by half 4. Check the number of power failures/ duration of these power failures and if possible what load were on the UPS at the time of the power failures. I hope this will help. If all verifications are to specifications, then most likely it is a software problem
Battery is probably dead. Will need to purchase new one, not repairable. When replacing, do not buy "new" battery that has been sitting around on a shelf for several years. Will have much shorter life. Insist on battery that has been made within the last year, maybe 18 months at most. Expect to pay $50 to $125. To increase battery life, try not the let them fully discharge when using. Most recommendations are keeping them above 10% charge.
I'm not sure of your charging regiem but it is possible that you hav not let the batteries become disscharged before they back on the charger, short cycling particular batteries gives them a memory and reduces their life significantly. Most rechargeable batteries have a life of so many cycles, just say its 100 cycles. If you put on charge when battery is only down to 80% and charge it up this counts as 1 cycle. Therefore your battery life would be reduced to 20% of what its capable of. This is only true if short cycling the chargeing of the battery is frequent. Not knowing exactly what your charging habits are or the age of them makes it a guess from me. It otherwise might be a fault in your charging circuit which would require specialist diagnosis.
$orry, theres no fix to this, after a while batterys begin to die and the life becomes shorter. this could be due to leaving it on charge all day and night and not letting it frequently loose and gain charge again. even my laptop battery has began to lose its battery length - but ive had my battery for a long time. purchase a new battery and try to keep from leaving the A/C adapter in over night. you should notice alot longer battery length after that. rate me :)
read da manual which cms wid da battery on hw lng 2 charge it wen newly purchased. charge wen battery is cmpltly drained.smtimz it may refuse 2 chrg so get a universal charger nd alwz use it 2 crg
Try running the battery down completely (0% so it turns off itself), and charging whilst the phone is completely off (I'd suggest leaving it overnight). Repeat this once or twice, then see if your battery life has improved. Also ensure that you havent left anything on that could be eating your battery up i.e. bluetooth, and contact your supplier if the problem persists, as you should be covered.
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