Summary: Put simply: Optima RTR-3.7, rated 44Ah 12V 730A, sold for cars and vans. Weight is 15.6 kg, worth knowing before you lift it out of the tray.
Optima RTR-3.7 for cars and vans
Got a car that needs a Optima RTR-3.7? You are on the right page. With the positive on the right-hand side, the leads in most cars that used this code will reach without stretching. Batteries online are filed at baterias.online by brand and code, the same code printed on yours.
A modest 44Ah keeps size and weight down for tight spaces. 730A gives more starting power than most batteries of similar dimensions.
12VVolts
44AhCapacity (C20)
730ACold cranking amps
Check before ordering
- ✓ Technology to match: spiral-cell AGM. Moving to a different chemistry may need settings changed in your system.
- ✓ Outside dimensions are 237 × 172 × 197 mm. Run a tape measure over your tray or compartment, including the height under the bonnet or lid.
- ✓ Plus post: positive on the right-hand side. Check yours before ordering.
Full specifications of the Optima RTR-3.7
ManufacturerOptima
Model codeRTR-3.7
RangeOPTIMA RED TOP
Suitscars and vans
Volts12V
Capacity (C20)44Ah
Cold cranking amps730A
TechnologySpiral-cell AGM
Size L × W × H237 × 172 × 197 mm
Battery weight15.6 kg
Terminal polaritypositive on the right-hand side
EAN barcode4016987113578
Answers before you buy
Is the Optima RTR-3.7 a heavy battery to fit?
It weighs 15.6 kg. Use the handle if fitted and lift with your legs, not your back.
What is the cold cranking rating of the Optima RTR-3.7?
730A under the EN test. Diesel engines usually need more cranking power than petrol engines of the same size.
Will the Optima RTR-3.7 fit my tray and connect properly?
Compare 237 × 172 × 197 mm with your tray and check the old battery is also positive on the right-hand side.
How should I store the Optima RTR-3.7 if I don't fit it immediately?
Yes, gradually. Lead batteries lose a little charge each month, lithium much less. A quick charge before use is a good idea.
What spiral-cell AGM means for you
Each cylinder in a spiral battery is a complete cell. Strong bursts of current make spiral batteries great for big engines. Recharge promptly after heavy accessory use.
More options
When the numbers match, the Optima RTR-3.7 can be ordered online at baterias.online in a few minutes. Other Optima models are linked below if you need a different size from the same maker.
Practical advice for cars and vans
An old car that has never had a new battery is often running on borrowed time. Some recent models want the new battery registered through the diagnostic socket, so check the handbook. Choosing a lower capacity than the original to save a little usually ends with a dead battery once the frosts arrive.
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