How-To Tip: Battery Life

SAVE YOUR BATTERY
FROM WINTER'S
ICY DEATH GRIP


Here in Ohio, winter temperatures can drop well below 0 degrees Fahrenheit, and that's optimal battery killing temperature for most sport and utility ATVs. By late October, the temperatures are getting cold enough frequently enough to start draining the sealed acid batteries common in today's quads. If you don't already own one, now is the time of year to go buy a battery tender or low-voltage battery charger for your ATV.

At TPR, we're pretty anal about our quad maintenance. Sport quads with highly modified internal engine parts - even just a high-compression piston - like the TPR project YFZ450R put an added strain on the starter every time you crank over the engine to fire up the quad. That added strain is shifted to the battery by drawing a little extra juice than a stock quad with no modifications, and that means your battery will start to lose its charge quicker. So we hook up our project Yamaha to the battery tender about every other ride, or during long periods in between rides, to make sure our battery has an optimal charge.

You don't have to get extremely technical and monitor your battery's exact charge with a volt meter. Most low-voltage battery tenders, like the Optimate 3 we use and purchased at a local Yamaha dealer, will charge the low-voltage battery of an ATV to the optimal 12 to 14 volt range without over charging it and damaging a wet battery's internal cells. Such chargers plug into a standard wall socket, have positive and negative clamps for your battery terminals and are available at Wal-Mart or a local dealer for about $50.

During the cold winter months, our charger is almost never disconnected from the YFZR battery. We also typically remove the battery from the quad during the winter just as an added precaution, so if there is an immense charge or overload to our shop system that the breaker doesn't catch we won't fry our expensive Dynojet PCV or other electronic components on the new Yamaha.

On a precautionary note, don't expect to use your dad's rolling charger/starter to maintain your quad battery. Those big rolling chargers are designed for truck and car batteries, not the small unit on your ATV. Using one of those chargers could seriously damage your battery by melting the lead terminals, and that would put you out some big bucks. Today's ATV batteries can cost more than $80 to replace, so spending $50 on a trickle charger or battery tender can keep your battery breathing life into your quad for years.

For more How-To tips, check out the link at the top of the page. Next, we'll be showing you how to change the oil in Yamaha's new YFZR models, a tip that applies to the YFZX and most other sport quads. Stay tuned for a product review of Motoworks SR4 full exhaust system.