E&J GF0600059REVB06 manual VII Batteries, Guidelines to extending battery life

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VII Batteries

Batteries are of critical importance, require attention and maintenance, and will require periodic replacement. As batteries age, their ability to hold a charge decreases. Old batteries discharge much more quickly than new batteries under the same driving conditions. This results in a decrease in the distance the wheelchair can travel before batteries need to be charged. This decrease is often misin- terpreted as a problem with the wheelchair system, when in fact the batteries have simply reached the end of their useful lives and should be replaced. Properly maintained batteries can be expected to last approximately 9 to 18 months. The purpose of proper maintenance is to extend that life as much as possible, and to minimize the incidence of unsatisfactory wheelchair performance.

Batteries are not supplied with your Metro Power III wheelchair. The Metro Power III uses two 12 volt deep cycle batteries, group size U1. For best performance, batteries with the highest possible amp/hour rating should be used.

sCaution: Use only deep cycle batteries on your wheelchair. Do not use automotive batteries.

Warning: Batteries generate sulfuric acid, which can burn eyes, skin, clothes, etc. Use caution! Always wear safety glasses when working with batteries. If contact oc- curs, flush immediately with water and get medical attention.

Guidelines to extending battery life

•Give the batteries a full charge before using them for the first time.

•Limit use of new batteries for the first ten charge/discharge cycles—avoid deeply discharging the batteries. New batteries are not capable of their rated output until they have been discharged a number of times.

•Recharge batteries after every discharge. Discharging batteries deeply before recharging them will shorten battery life. Leaving partially discharged batteries idle for several days is not recommend- ed; charge them as soon as possible after discharging.

•Charge batteries fully each time before using. Allow the charger to finish its charge cycle once started. This will help prevent deeply discharging the batteries. Unlike some rechargeable bat- teries, the batteries used on wheelchairs do not exhibit a significant “memory effect”—they will recharge to their full capacity, even if only partially discharged before each charge.

•If you must store your wheelchair for a long period of time, charge the batteries weekly.

•Perform regular maintenance on the batteries. See maintenance schedule in Section VIII, MAINTENANCE, for recommended regularity.

 

 

 

Metro Power III Owner’s Manual

GF0600059RevB06, November 2006

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Contents Metro Power Contents Introduction Maintenance II Safety PrecautionsGF0600059RevB06, November GF0600059RevB06, November Electromagnetic interference EMI from radio wave sources Powered Wheelchair Electromagnetic Interference EMI EMI WarningsImportant Information Balance III Handling TipsReaching / bending forward or sideward Reaching / bending backwardRamps and Inclines Descent AscentIV Getting Started Motor and battery cables Power Drive SystemIntegral controller JoystickBattery gauge ON/OFF switchMaximum speed / profile indicator Horn buttonBatteries Operating InstructionsArms Flip arm back VI AdjustmentsAdjust footrest length Footrest-detachable, swingaway Remove footrestAttach footrest Attach elevating legrest Adjust legrest elevationAdjust elevating legrest pad position up or down Adjust elevating legrest footplate extension lengthAdjust wheel locks VII Batteries Guidelines to extending battery lifeBattery Charger Interface Battery charger back panel Battery Charger Battery Charger FeaturesLine connector AC voltage switchAC connector Battery charger front panelBattery Charger Safety Charging the Batteries Remove and Install Batteries Remove Batteries Metro Power Battery connections Install BatteriesClean battery terminals Battery maintenance Clean batteriesDo-it-yourself Maintenance Viii MaintenanceList of Tools Controller Maintenance GeneralCharge batteries Control system daily check JoystickJoystick boot ConnectorsCables MountingClean wheelchair Clean & check upholsteryCheck tires Check wheel lock engagementCheck bearings Inspect motor brushesTroubleshooting, Power Drive IX TroubleshootingTroubleshooting, integral controller General diagnostic guideBattery gauge diagnostic guide table Battery gauge diagnostic guideBattery System Gauge Check / Action Lights Front output fuse panel Troubleshooting, battery chargerSYMPTOMCHECK-ACTION Reassembly Transporting the Metro PowerWarranty Periods XI Limited WarrantyGF0600059RevB06, November XII Index GF0600059RevB06, November

GF0600059REVB06 specifications

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