Bat­tery bliss

Give your bat­tery a healthy boost

Motorcycle News (UK) - - GARAGE -

Test­ing time

Check your bat­tery’s out­put with a mul­ti­me­ter. Set it to 20V and then touch the red probe onto the (+) ter­mi­nal and the black probe on the (-) ter­mi­nal. Your bike needs to have 12.4V or more to start.

Charge it up

If the bat­tery is be­low 12.4V, con­nect it to a charger be­fore you try to start your bike. Some charg­ers won’t work if a bat­tery is be­low a cer­tain volt­age, if this is the case you may need to re­place the bat­tery.

Volt­age check

Con­nect the bat­tery to the bike and switch on the ig­ni­tion. With a mul­ti­me­ter con­nected, the volt­age should drop then hold. If it con­tin­ues to drop then it’s time to re­place the bat­tery for a new one.

Buy­ing bet­ter

Only re­place a bat­tery with one of the same per­for­mance. Re­serve ca­pac­ity is im­por­tant be­cause of par­a­sit­i­cal drain from alarm sys­tems. Also, buy a qual­ity brand to max­imise its life span.

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