Abbildung Optima Redtop
Symbol: Eignung für car
Symbol: Eignung für Bus
Symbol: Eignung für Wohnmobile
Symbol: Eignung für Lkw
Symbol: Eignung für Construction machinery
Symbol: Eignung für Tractors
Symbol: Eignung für Marine
Symbol Recycling efficiency 95 %
Symbol Maximum tipping angle 90º
Optima Redtop
Sealed maintenance-free pure-lead spiral-cell battery | electrolyte absorbed (AGM)

Optima RedtopHighest starting performance

Whenever starting power is a top priority, e.g. in heavy commercial agricultural and construction machinery. Does not lose its starting ability even during long periods of downtime. Perfect for emergency vehicles or generators.

Our recommendation for American vehicles if you want a sealed battery.

Features

  • Easy to install

    Your advantage: With the right dimensions, it fits exactly in your US vehicle.

  • Connect quickly

    Your advantage: Can be easily connected to the cables of common US models with US front pole with internal thread or A-cone poleHighest

  • Highest starting currents.

    Because this AGM battery has a particularly large reaction surface due to the tightly wound grids, it charges well and has a high cold start capability.
    Your advantage: Even if you have a lot of consumers installed, which eat up the battery, it brings enough power to start.

Characteristics

  • Very high starting performance. Wound pure-lead plates for larger plate surface and less plate spacing.
  • Very cycle resistant. Tolerates deep discharging by power-hungry consumers when the engine is switched off.
  • Good vibration resistance and durability. Pressed, wound plates protect the active material.
  • For extreme conditions.
  • Sealed pure-lead spiral-cell battery with electrolyte fixed in glass fibre mats (AGM).
  • Compact dimensions.
  • 6-volt and 12-volt versions.
  • Sealed maintenance-free and leak-proof.
Recycling efficiency 95 %
Start-Stop not
Maximum tipping angle 90º

All Types

Optima Redtop

Battery Volt Capacity CCA Length mm Width mm Height mm Pos. of terminal Terminal
RTR-3.7Li1244 AH (c20)730 A (EN)23717119701more
product image Starter Battery Optima Redtop RTR-3.7L

RTR-3.7L

Japan-Code:{jpn}

RTR-3.7L

Position of Terminal:0
Schema Schaltung 0
Volt:12
Terminal:1
Schema Endpol 1Schema Endpol 1
Capacity:44 AH (c20)
Base plate:B01
Schema Bodenleiste B01Schema Bodenleiste B01
Cold Cranking Ampere:730 A (EN)
Size:237 x 171 x 197 mm
Schema Batteriekasten

Kasten: RTR-3.7L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTU-3.7Li1244 AH (c20)730 A (EN)23717119711 und USmore
product image Starter Battery Optima Redtop RTU-3.7L

RTU-3.7L

Japan-Code:{jpn}

RTU-3.7L

Position of Terminal:1
Schema Schaltung 1
Volt:12
Terminal:1 und US
Capacity:44 AH (c20)
Base plate:B01
Schema Bodenleiste B01Schema Bodenleiste B01
Cold Cranking Ampere:730 A (EN)
Size:237 x 171 x 197 mm
Schema Batteriekasten

Kasten: RTU-3.7L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTS-3.7Li1244 AH (c20)730 A (EN)23717119711more
product image Starter Battery Optima Redtop RTS-3.7L

RTS-3.7L

Japan-Code:{jpn}

RTS-3.7L

Position of Terminal:1
Schema Schaltung 1
Volt:12
Terminal:1
Schema Endpol 1Schema Endpol 1
Capacity:44 AH (c20)
Base plate:B01
Schema Bodenleiste B01Schema Bodenleiste B01
Cold Cranking Ampere:730 A (EN)
Size:237 x 171 x 197 mm
Schema Batteriekasten

Kasten: RTS-3.7L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTF-4.2Li1250 AH (c20)815 A (EN)2541851841USmore
product image Starter Battery Optima Redtop RTF-4.2L

RTF-4.2L

Japan-Code:{jpn}

RTF-4.2L

Position of Terminal:1
Schema Schaltung 1
Volt:12
Terminal:US
Schema Endpol USSchema Endpol US
Capacity:50 AH (c20)
Base plate:B13
Schema Bodenleiste B13Schema Bodenleiste B13
Cold Cranking Ampere:815 A (EN)
Size:254 x 185 x 184 mm
Schema Batteriekasten

Kasten: RTF-4.2L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTU-4.2Li1250 AH (c20)815 A (EN)25417520011 und USmore
product image Starter Battery Optima Redtop RTU-4.2L

RTU-4.2L

Japan-Code:{jpn}

RTU-4.2L

Position of Terminal:1
Schema Schaltung 1
Volt:12
Terminal:1 und US
Capacity:50 AH (c20)
Base plate:B13
Schema Bodenleiste B13Schema Bodenleiste B13
Cold Cranking Ampere:815 A (EN)
Size:254 x 175 x 200 mm
Schema Batteriekasten

Kasten: RTU-4.2L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTR-4.2Li1250 AH (c20)815 A (EN)25417520001more
product image Starter Battery Optima Redtop RTR-4.2L

RTR-4.2L

Japan-Code:{jpn}

RTR-4.2L

Position of Terminal:0
Schema Schaltung 0
Volt:12
Terminal:1
Schema Endpol 1Schema Endpol 1
Capacity:50 AH (c20)
Base plate:B13
Schema Bodenleiste B13Schema Bodenleiste B13
Cold Cranking Ampere:815 A (EN)
Size:254 x 175 x 200 mm
Schema Batteriekasten

Kasten: RTR-4.2L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTS-4.2Li1250 AH (c20)815 A (EN)25417520011more
product image Starter Battery Optima Redtop RTS-4.2L

RTS-4.2L

Japan-Code:{jpn}

RTS-4.2L

Position of Terminal:1
Schema Schaltung 1
Volt:12
Terminal:1
Schema Endpol 1Schema Endpol 1
Capacity:50 AH (c20)
Base plate:B13
Schema Bodenleiste B13Schema Bodenleiste B13
Cold Cranking Ampere:815 A (EN)
Size:254 x 175 x 200 mm
Schema Batteriekasten

Kasten: RTS-4.2L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RTC-4.2Li1250 AH (c20)815 A (EN)25417520011more
product image Starter Battery Optima Redtop RTC-4.2L

RTC-4.2L

Japan-Code:{jpn}

RTC-4.2L

Position of Terminal:1
Schema Schaltung 1
Volt:12
Terminal:1
Schema Endpol 1Schema Endpol 1
Capacity:50 AH (c20)
Base plate:B13
Schema Bodenleiste B13Schema Bodenleiste B13
Cold Cranking Ampere:815 A (EN)
Size:254 x 175 x 200 mm
Schema Batteriekasten

Kasten: RTC-4.2L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet
RT6V-2.1Li650 AH (c20)815 A (EN)2549020311 und USmore
product image Starter Battery Optima Redtop RT6V-2.1L

RT6V-2.1L

Japan-Code:{jpn}

RT6V-2.1L

Position of Terminal:1
Schema Schaltung 1
Volt:6
Terminal:1 und US
Capacity:50 AH (c20)
Base plate:B06
Schema Bodenleiste B06Schema Bodenleiste B06
Cold Cranking Ampere:815 A (EN)
Size:254 x 90 x 203 mm
Schema Batteriekasten

Kasten: RT6V-2.1L
Where can I buy this battery?

Dealer online shop

Buy online

Locally

Dealer locator
Download datasheet

Accessories
Charger

DEFA SmartCharge

Compact design for convenient charging of 12 volt batteries.


See product

Fronius Acctiva


Charge starter batteries professionally and supply consumers and on-board electronics.


See product
What is an AGM battery?
FIBERGLASS FLEECE
ABSOLUTELY MAINTENANCE-FREE
LEAK PROOF
What is the point of vibration-proofing a starter battery?
Especially in trucks and other high-displacement commercial vehicles with diesel engines, there are strong vibrations that cause the battery to age prematurely. Our truck batteries in SHD versions are vibration resistant according to V3, like the intAct …
Our absolutely maintenance-free motorcycle batteries
intAct Bike-Power AGM, intAct Bike-Power SLA, intAct Bike-Power GEL, intAct Bike-Power HVT and intAct Bike-Power GEL HVT-HD are valve regulated lead-acid batteries or VRLA batteries (VRLA=Valve Regulated Lead-Acid). VRLA batteries produce much less gas …
What does absolutely maintenance-free mean?
Absolutely maintenance-free batteries are valve-regulated lead-acid batteries or VRLA batteries (VRLA = Valve Regulated Lead-Acid) that are sealed at the factory. Here, significantly less gas is produced than in wet batteries. The gas produced remains …
Why does this battery have such a good current draw?
Due to the AGM technology, this battery absorbs the current particularly well, i.e. it recharges faster than a conventional wet battery and you can charge it with a higher charging current or a more powerful charger, like the ? This characteristic comes …
What are start-stop batteries?
The EFB (Enhanced Flooded Battery) was developed for start-stop vehicles. This further development of the wet battery is significantly more cycle resistant, like the intAct Start-Stop-Power EFB. Because of the good current reserve, AGM batteries are also …
The difference between low maintenance, maintenance free and absolutely maintenance free.
Low-maintenance, flooded lead-acid batteries lose fluid during normal use. They must be maintained, i.e. the fluid level should be checked regularly and the fluid loss compensated with distilled water if necessary. These batteries usually have vent caps …
What do discoloured plugs mean?
A brown-reddish discoloration of the plugs indicates an overcharging of the battery and a fault in the charging system. Tip: Your workshop can check whether your charge controller is working properly. Tip: Check the function and characteristics of your …
Pay attention to the state of charge
We recommend: Check the charge level every 2 - 3 months if ... ... the vehicle is often left unused. ... you drive a lot of short distances. ... many consumers are installed. ... it is cold. ... in start-stop systems the engine does not switch off as …
Identifying and filling the liquid level
Markings on the outside of the white or transparent housing of a wet battery indicate the minimum (MIN) and maximum (MAX) fill levels. During commissioning or initial filling, the battery must be filled with battery acid up to the upper mark (MAX). During …
Check battery externally before charging
If the battery box is damaged or deformed, replace the battery. Clean dirty terminals with a wire brush. Remove oils, fluids or other deposits. For batteries with plugs, check fluid level and refill to MAX with distilled water if necessary.
What does pole growth on the battery mean?
Whitish-grey deposits on the poles, so-called "pole growth", is caused by strong sulphation on the plates. Tip: Always ensure a good state of charge.
What is sulfation and what can you do about it?
Sulphation or sulphation is an undesirable ageing process in batteries where too much lead sulphate forms on the lead plates, which cannot be removed even with prolonged charging. The battery's capacity drops significantly, or it fails altogether. Sulfation …
What the battery does
In a nutshell, the battery generates electricity, which it delivers to the consumers. It is charged and is ready again. So far, so good. Meanwhile, a bit of chemistry happens inside the battery. Current flow In principle, current flows between a positive …
A coherent equation: A lot out, a lot in.
Every battery loses power over time. If it is loaded normally and is always fully charged, the capacity is slowly reduced. If it is often overloaded and insufficiently charged, the capacity is reduced much more quickly, i.e. the battery ages much faster. Ideally, …
Do I need a start-stop battery or a normal one?
In start-stop vehicles, the engine stops every time the vehicle is in neutral. This saves petrol and reduces air pollution. However, this means an extremely high load for the battery. It has to start much more often, i.e. deliver high currents, than a …

What is a starter battery?

A battery that is charged by the alternator and starts the vehicle. For this purpose, the starter motor requires a lot of current for a short time. In addition to the cold start capacity (CCA), which indicates how much current the battery can ideally supply, the properties of a battery influence how reliably it can provide this starting power. A battery with very good charging properties recharges more quickly, for example, which benefits vehicles in city traffic in particular. It also supplies the consumers in vehicles without an additional back-up battery or supply battery. The more electrical consumers are installed at the factory or retrofitted, the more capacity is required to supply them when the vehicle is idling or at an engine stop and still reliably restart the vehicle.

Commissioning

A battery that is not fully charged when installed will not reach its full capacity in the future and will have a significantly shortened service life.

Even factory-filled and charged batteries can lose charge during storage. We recommend that you also fully charge them before installation.

You can find out how to do this in our step-by-step guide to charging your battery.

Maintenance and Care

Absolutely maintenance-free batteries are valve-regulated lead-acid batteries or VRLA batteries (VRLA = Valve Regulated Lead-Acid) that are sealed at the factory. Here, significantly less gas is produced than in wet batteries. The gas produced remains in the circuit of the battery due to gas recombination. As a result, these batteries lose significantly less liquid. They do not need to be topped up, and it is not even possible to do so, as they cannot be opened again without damage.

For which applications is the Optima Redtop suitable?

Symbol carcar
car, passenger car, cars, automobiles, vans, panel van
Symbol BusBus
Bus, Omnibus, Autobus
Symbol WohnmobileWohnmobile
Wohnmobile, Caravan, Motorcaravan, Motorhome, Campingbus, Reisemobil, Alkoven, Campingfahrzeuge
Symbol LkwLkw
Lkw, Lastkraftwagen, Lastwagen, Lastauto, Laster, Lastzug, Truck,
Symbol Construction machineryConstruction machinery
Compatible with construction machinery such as wheel loaders, tracked loaders, excavators and graders.
Symbol TractorsTractors
For tractors, tractors, axle tractors, tractors, bullodg, tractor tractors and implement carriers.
Symbol MarineMarine
Boats, ships, yachts