I let charge 3days and when I ues it on batt it wont last a hour

That "new" battery is no god. Take it back and have it exchanged.

Will it start with booster cables. If it will there is a problem with your charging system.

The problem is that there is some corrosion on the terminals that is draining the battery. Without taking it apart or sending it in, there is nothing that you can do.

Well, if the Batt don't hold charge then check the regulator on the bike with an Ohmmeter you can buy one at an Auto parts shop....motor running you should see 14.5 V if not then the Reg is out!!!

Yes, If you have a volt meter, jump and start engine, with engine running you should have approx 13.5 to 14.2volts that would tell me that batt is getting charged when engine is running. you said new batt would not hold a charge, I would be thinking about a parasitic draw(small amount of power) that in time will drain batt. things to look for are glove box lights, under hood lights that dont turn off. one easy way too see if you have a draw is to disconnect one batt cable, now use a regular (12volt non-self powered) test light and touch one end to batt cable and the other to empty batt terminal, with no light switches on and doors closed, this test light should not light and if it does then you have a drain on batt that will kill it say overnight.

NEW BATTERIES NEEDED TRY CHARGING CONSTANT FOR 16 HOUR IF POSS OR OVER NIGHT. IF BATTS KEEP FAILING THEN SERCH NEW BATTERIES ON THE WEB A PLACE IN WALES DO THEM NEXT DAY DELIVERY GOOD VALUE

Be sure to charge the battery, otherwise you might smoke the new alternator(not made to charge a dead batt.). Have the batt. load tested. Check batt. cable ends for corrosion.

Overnight for the first charge, then let it run empty.

The biggest mistake most people make is to use the camera for an hour or so, and then plug it back into the charger...Batteries have a memory of sorts, and eventually this habit causes the batt to only last for an hour or 2.

Rechargeables need to be stretched out and used to their full potential, inorder to realize their full potential.

After the first full charge-full discharge cycle, let it charge for 4-8 hours (depending on the type, charger, and manufacturer's specs, of course) and then allow it to sit for a few hours after use (to cool down) before putting it on the charger.

how long do you usually charged the batt? to make charge last slightly longer leave the batt inside the charger for an hour after the charger light goes off. if you have a fully charged batt you should be able to take approx. 300 pics or 2.5hrs approx.batt life. for viewing pics it should give you approx. 6800 pics and approx. 5.5 hrs. of course, number of still images and and batt life may vary depending on the camera settings.so if you're zooming in and out,using the flash,going from camera to play mode, turning cam on and off, using other settings and features of the camera, this will cause the batt to drain much faster.also ambient temperature also affects batt life.if it's very cold, the batt drains a bit faster.also, it's recommended that if you're not using the camera to remove the batt.retaining the camera settings, date & time will cause batt to drain even if your not using it. if did this and still you think it's odd that your batt drains quickly and looses charge even if it's fully charge, it might also indicate that what you might be a defective batt. one way to find out is to try using the same type of batt from a friend or a relative that has one to confirm and further isolate issue.anyway, supplied accessories has the same warranty that applies to your camera.so you may send it out and have it replaced if needed.hope this helps.thanks:)

discharge your batt. fully. charge your batt. on 3phase current. dont remove in middle, give time for your batt. to charge fully
ues JVC original batt.