The purpose of a tractor battery is the same as that of a car battery: to crank the engine. When the key is turned on, the battery supplies the power to the starter, which then turns the engine until it cranks.

1. Battery Buying Guide—Find Your Tractor Battery
The purpose of a tractor batteryisthe same as that of a car battery:to crank the engine.Whenthe key
isturnedon, the batterysuppliesthe powertothe starter,whichthenturnsthe engine until it cranks.
The keyto findingthe rightbatteryforyour tractor ismakingsure you use the correct data whenasking
abouta battery.
The difference betweenacar batteryand a tractor (or deepcycle) batteryisthe rate at whichthey
delivercurrent,andhowtheyare designed.A tractorbatterymaybe usedina car, buta car batteryis
not recommendedforuse inatractor. Car batteriesrelease the surge of powerneededtoturnthe
startermotor, andafterwardthe alternatorreplenishesthe charge.Deepcycle batteriesare designedto
release theirenergyoveralongerperiodandtodischarge more fullybefore beingrecharged.
How They Are Different
Car batteriesdelivermaximumcurrentinashort period.Afterthe carstarts, the vehicle'salternator
suppliesmostof the electricity.A carbatteryis designedwiththinplatestoprovide agreatersurface for
energyproduction. Tractorbatteries startthe engine andprovide asteadycurrentforextendedperiods.
Althoughthe batterycanbe dischargedandrechargedrepeatedly,thisprocesswillruincarbatteries
overtime. Tractor batteries use thickerplates.
Choosinga Battery
Car batteriesproduce more crankingpowerforstarting,but tractor batteries are more durable.
Ratings
Car batteriesare ratedin coldcrankingamps(CCA),whichisthe maximumamountof ampsthe battery
produceswhile startingthe engine.HigherCCA ratingsare recommendedincoldclimate areas. Tractor
batteries are ratedinamp-hours(AH).A batterywith one amp-hourcan discharge one ampforone
hour.
Deep-CycleUses
Deep-cycle batteriesare more durable andhave usesbeyondtractors,includingcarsand trucks
(especiallythose withalotof electrical accessories),RV's,campers,forklifts,golf cartsandboats,backup
poweror lighting,andforstoringpowergeneratedbysolarpanels.
Instructions:
 Followthe device manufacturer'srecommendationstodeterminethe dimensions,voltage,and
capacityin amp-hoursforthe deepcycle battery.Tooweaka batterywill deplete itspower
prematurely.One thatistoostrongmay not discharge enoughbefore recharging,resultingin
decreasedbatterylife.
 Choose a marine batteryforboating,aircraftor RV use if the batterymustprovide a burstof
engine crankingpowerinadditiontoaprolongeddischarge.
 Selectaconventional floodedbatteryif itwill be locatedinawell-ventilatedareaandcan be
securedagainsttippingorspilling.Floodedbatteriesneedtobe toppedoff withwater
occasionally,solocate themwhere theycanbe servicedeasily.

2.  Choose a sealedAGM(AbsorbedGlassMat) or gel batteryif the batterymust be tiltedduring
storage or use,or if there islimitedventilation.These batteriesrequire noregularservicingand
are oftenusedinelectricvehiclesandpowerbackupsystems.
 Use NiCad(nickel-cadmium)orNiFe (nickel-iron) batterieswhere longbatterylife isanecessity.
Thoughtheyare more expensive andlessefficient,thesealkaline-basedbatterieslast15 to 25
yearsin mostapplications.
Tips&Warnings
 All partsof a lead-acidbatterycanbe reclaimed.If you're replacingone,take the oldone toa
recyclingcenter.
 Observe the batterymaker'scautionsandguidelineswheninstallingorservicingabattery.
Batterymanufacturers acrossIndiaofferbothautomotive batteriesanddeepcycle batteries.However
there are some manufacturerslike SFSonicwhoofferthe best batteryprice.