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Motorcycle Batteries
Starter Batteries
Traction Batteries
Supply Batteries
Picture of intAct Bike-Power Classic

Reliable starting power at an excellent price.

Exchange recommendation for a broken flooded battery.

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Picture of intAct Bike-Power AGM

Cost-effective all-rounder with solid buffer

for seasonal and short distance use.

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Picture of intAct Bike-Power SLA

Ready-to-use all-rounder

with solid buffer for seasonal and short distance use.

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Picture of intAct Bike-Power GEL

Provides 30% more starting power

for modern motorcycles with many electrical consumers, including ABS.

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Picture of intAct Bike-Power GEL HVT-HD

Special starting power for high demands and heavy loads.

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Picture of intAct Bike-Power HVT

Extremely vibration-resistant design

for special requirements and high loads due to vibrations (such as Harleys).

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Picture of intAct Bike-Power Lithium

Small top-of-the-range powerhouse

perfect whenever every gram or centimeter matters.

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Picture of intAct Garden-Power

Especially for use in lawn tractors and ride-on mowers

with low self-discharge and extra vibration resistant.

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Odyssey Bike
Picture of Odyssey Bike

Enormous starting power with very high cycle stability

for particularly demanding bikes under almost all conditions.

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Picture of intAct Start-Power NG
Testsieger

Always start properly

for passenger cars (also Asia models) to super-shakeproof for trucks.

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Picture of intAct Start-Power
TestsiegerTestsieger

Top performance at a great price

for almost all passenger cars, coaches, trucks and agricultural machinery.

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Picture of intAct Race-Power

The powerful all-rounder

with good durability and excellent value for money.

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Picture of intAct Premium-Power
TestsiegerTestsieger

30% extra starting power

and fast loading for many consumers and short distance use.

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Picture of intAct Start-Stop-Power AGM
Testsieger

Start. Stop. Keep charging.

For taxis, medium and luxury class cars, SUVs and trucks with start-stop systems and micro-hybrids.

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Picture of intAct Start-Stop-Power EFB

Start. Stop. Keep charging.

For small and medium-sized cars with start-stop systems and micro-hybrids.

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Picture of intAct BackUp-Power

Support for the starter battery

as an additional power supply for consumers, also during start-up.

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Picture of intAct Oldtimer-Power
Testsieger

Starting power in retro look

with the latest battery technology and 80% hand-crafted.

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Picture of intAct US-Power

For American vehicles

High performance battery matched to U.S. dimensions and end-pole types.

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Forster Premium Starter
Picture of Forster Premium Starter

Permanent top starting performance
combined with enormous weight savings and full installation flexibility for up to 100,000 starts.

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Odyssey Batteries
Picture of Odyssey Starter

Extreme starting power at any time

even in winter. Tolerates long-term discharge to deep discharge.

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Optima Redtop
Picture of Optima Redtop

Highest starting performance

even with long downtimes. Perfect for emergency vehicles or generators.

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Picture of intAct Traktion-Power Deepcycle

More working hours, more flexibility
and high reliability even with irregular loading.

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Picture of intAct Traktion-Power Deepcycle AGM

Robust and enduring

AGM-based for high currents and deep charge cycles.

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Picture of intAct Traktion-Power

Proven and cost-conscious

with good high current properties in light cyclical use.

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Picture of intAct Traktion-Power PzS

For the heaviest load

Long service life due to armored plate structure, even in multi-layer use.

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Picture of intAct GEL-Power

Minimal maintenace during use

and as storage for renewable energies and supply in the demanding leisure sector.

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Odyssey Batteries
Picture of Odyssey Traction

Greater freedom of movement

and exceptional performance even with a partially charged battery.

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Optima Yellowtop
Picture of Optima Yellowtop

Long-term stable performance

during the entire unloading process paired with short charging times.

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Trojan Deep Cycle
Picture of Trojan Deep Cycle

More working hours, greater flexibility

and high reliability even with irregular charging.

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Picture of intAct Marine-Power

Cost-conscious marine battery
with good capacity absorption and high capacity reserves.

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Picture of intAct Marine-Power AGM

Robust marine battery
AGM-based for high currents and deep charge cycles.

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Picture of intAct Solar-Power AGM

Robust solar battery
AGM-based for high currents and deep charge cycles.

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Picture of intAct Solar-Power

Proven and cost-conscious

with good capacity absorption and high capacity reserves.

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Picture of intAct Traktion-Power PzS

For heavy cyclical use

also at fluctuating recharging. Provides permanently stable voltages.

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Picture of intAct Active-Power AGM

Professional all-rounder

in AGM design, sealed maintenance-free and with high vibration resistance.

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Picture of intAct Active-Power GEL

Maintenance-free and uncomplicated

for seasonal power-supply and as intermediate storage in smaller solar applications.

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Picture of intAct GEL-Power

Strong and maintenance-free

as storage for renewable energies and supply in the demanding recreational sector.

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Picture of intAct AGM-Power

Uncomplicated all-round talent

for hobby, leisure and smaller solar applications.

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Picture of intAct Block-Power

Ready for many uses

durable and powerful even in safety-relevant applications.

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Forster Premium
Picture of Forster Premium

Maximum capacity and lifetime
For use in camping, marine and as energy storage.

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Forster Fishing
Picture of Forster Fishing

Durable marine battery
Provides reliable and enduring power to fishing equipment.

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Forster Thermo Control
Picture of Forster Thermo Control

Durable performance in cold conditions
for installation in outdoor, non-heated areas.

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Forster Standard
Picture of Forster Standard

Durable with consistently strong performance
Maximum safety for normal to medium loads in caravan and marine applications.

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Forster Smart Power
Picture of Forster Smart Power

Versatile, powerful and affordable
The Smart Power series offers a LiFePO4 lithium supply battery with innovative frost protection management at an attractive price.

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Odyssey Batteries
Picture of Odyssey Supply

Stalwart + always powerfully prepared

for long-term supply as well as short peak-performance with extremely good charging behaviour.

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Optima Bluetop
Picture of Optima Bluetop

More cycles in maritime use

and for consumers in camping vehicles or buses.

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Trojan Deep Cycle
Picture of Trojan Deep Cycle

More working hours, more flexibility

and high sturdiness as a power-supply as well as a buffer.

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Glossary

ABCDEFGHIKLMNOPRSTUVWZ
Absorbent Glass MatAcidAcid PackAcid StratificationActive MaterialAdvanced Flooded BatteryAlloyAmmeterAmp-HourAmpereAverage DrainBackfire ProtectionBackup BatteryBalancingBatteryBattery CareBattery CaseBattery CategoriesBattery HydrometerBoost ChargingCalcium BatteryCapacityCarbon AdditiveCellCell Short-CircuitCharge RegulatorChargerChargingCharging VoltageCircuitClosed BatteryCold Cranking Amps (CCA)Constant Current Battery ChargerConstant Current DischargerConstant-Voltage Battery-ChargerContinous TestCorrosionCurrentCurrent CollectorCutoff VoltageCycleCycle LifeCyclic LoadsCyclingCylindrical BatteryDamage due to Long Down-TimesDeep DischargeDeep-Cycle BatteryDegassingDepth of DischargeDirect CurrentDischarge RateDischargingDistilled WaterDouble LidDry-ChargedElectrolysisElectrolyteEnd of Charging VoltageEnhanced Flooded BatteryExpanded Metall GridFill LevelFlat PlateFloat ChargeFlooded BatteryFuseGas Recombinant TechnologyGassingGel BatteryGlass MatGridGroundGround CableHVTHybrid BatteryImmobilized ElectrolyteInternal ResistanceIonLead SedimentsLead SulfateLead-Acid BatteryLithium Iron Phosphate BatteryLithium-Ion BatteryLoadLow-MaintenanceM.A.S.S.MaintenanceMaintenance-FreeMemory EffectMultimeterNegative (-)Negative (-) PlateNominal VoltageNon-SpillableOpen Circuit VoltageOpen-Circuit VoltageOverchargingParallel CircuitPlacement of TerminalsPlatePlate PackPlate SetPolarityPole GreasePositive (+)Positive (+) PlatePrimary BatteryPulse ChargePure Lead BatteryRapid-Charge BatteryRecycling EffiencyResistorReversed PolaritySLI BatterySafety ReserveSealSealed Maintenance-FreeSecondary BatterySelf-DischargeSelf-Discharge RateSeparatorSeries CircuitSeries/Parallel CircuitService LifeShock-ResistantShort CircuitSilent LoadsSilverSmart ChargerSpacerSpecific GravityStandbyStart-Light-IgnitionState of ChargeStationary BatterySulfatingSuper-Heavy Duty BatterySupply BatteryTemperature Cut-offTerminalTerminal BridgeTerminal Pole TypeTerminal VoltageTraction BatteryTubular PlateUninterrupted Power SupplyUnwanted ResistanceValve-Regulated Lead-Acid BatteryVent CapVented BatteryVenting HoseVibrationVoltVoltageVoltmeterWattWatt-HourWet ChargedZinc-Air Cellkey-off drain
Open-Circuit Voltage

The voltage of a battery at rest, measured at least 4 hours after the last charge and after no current has been drawn for at least 1 hour.

The resting voltage provides information about the condition of a battery and notes on care.

To avoid damaging your battery, it should always be charged at least 75 %. For a battery with a nominal voltage of 12 V, 100 % charge corresponds to 12.69 - 12.75 V, 75 % corresponds to 12.51 - 12.57 V. If the battery is to be constantly fully charged in order to be available for certain tasks in case of emergency, it should be kept permanently at 0.1 V per cell above the nominal voltage. For a 12 V battery, this corresponds to a total voltage of 13.2 V.

If the open-circuit voltage of your battery is too low by the voltage of one cell, this indicates the plate short, i.e. the defect of a cell. This is probably a warranty case. In this case contact your dealer.

→ OC, open circuit voltage, quiescent current voltage