Specifications

13
FREQUENTLY ASKED QUESTIONS
Q.HowdoIknowifthebatteryisfullycharged?
A.TheChargeMeter’sneedlewilldecreasetowardstheleft.Afullychargedbatteryis
indicatedbyaverylowreading.RefertoSTEP6ofthecharginginstructionsforan
illustrationoftheChargeMeter.
 AlternativelyuseaBatteryHydrometer(ProjectaPartNo.BH100).Areadingof1.250
or more in each cell indicates a fully charged battery.
Q.WhydoestheChargeMeterindicateafullychargedbatterystraightaway?
A.TherearefourpossiblereasonswhytheChargeMetermayindicateafullycharged
batterystraightaway.
1. Thebatteryisfullycharged.
2. Thebatteryhastakenasurfacecharge.
3. Thebatteryhasafaultycell.
4. TheBATTERYVOLTAGEsettingonthechargerissetlowerthanthebatteryvoltage.
Q.WhatisSurfaceCharge?
A.Batteriesunusedorleftflatforsometimebuilduparesistancetobeingrecharged.
Whenthechargerisfirstconnected,thesebatterieswilltakeasurfacecharge,andthe
ChargeMeterwillindicateafullychargedbatterywithinashortwhile.Thebattery
howeverisnotfullycharged,thechargerisvoltagesensitiveandcannotdifferentiate
betweenasurfacechargeandafullychargedbattery.Afterafewhoursthebattery
maystarttoacceptsomechargebutmostbatterieswiththisconditionwillnotrecover.
Q.WhatisaFaultyCell?
A.12Voltbatteriescontain6cellsandonefaultycellisenoughtoruinyourbattery.
Ifaftereighthoursofchargingyourbatteryisstillflat,youshouldtestthecellsusing
ahydrometer.Ifonereadingislowerthantherestitindicatesafaultycell.Itis
pointlesstocontinuecharging,asthebatteryneedsreplacing.
Q.CanIusethechargerasapowersupply?
A.No.TheHDBC90cannotbeusedasapowersupply.Donotattempttoconnectthe
clamps to anything other than a suitable battery.