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Digital Subscriptions > Fast Bikes > 353 - June 2019 > KNOW YOUR…BATTERIES


We all know how important batteries are, and how much of a pain they can be as well. With this in mind, we headed over to see Giles at BikeHPS to get the lowdown on the little energy cubes and how to get the best from yours

Tech Talk

They’ll charge for these.

FB: How good is a battery on a standard bike?

GH: Standard batteries which, nowadays, are normally sealed AGM (absorbed glass mat, a special design of glass fibre mat designed to wick/absorb the battery acid/electrolyte between the battery plates), are normally very effective and far better than the previous – and often leaky – regular vented lead acid batteries of my youth, which often created nasty corrosion problems via their unavoidably necessary overflow pipes. AGM batteries contain only enough liquid to keep their very fine mat wet with sulphuric acid electrolyte, meaning that if their case is punctured, no excess liquid is normally available to leak out, making them ordinarily spill-proof. Being sealed also allows their use at odd angles; they deliver high starting currents on demand; and provide a relatively long service life with good electrical reliability – even when deep cycled or discharged. They are also maintenance-free, and are lighter than the flooded lead acid type.

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About Fast Bikes

Welcome to Fast Bikes Magazine In this issue: Aprilia RSV4 1100 Factory Launch Boothy went to Mugello to sample the delights of Aprilia’s new winged wonder. Sensible Sportsbikes Beano has been commuting on Ducati’s Supersport S and Suzuki’s GSX-S1000F. Triumph 765 on track We aren’t allowed to call it a Daytona 765… but everyone is. And much more!