Optima
Optima RTC-4.2 · Car battery 12V 50Ah 815A
Reference: BOL-OPTIMA-RTC-4.2 · EAN 4016987113455
The Optima RTC-4.2 (ETN 801 287 000, also written 801287000) is a car battery (spiral AGM) with 12 V, 50 Ah and 815 A cold cranking current, measuring 254 × 175 × 200 mm.
Optima RTC-4.2 · Car battery 12V 50Ah 815A images
- Voltage
- 12V
- Capacity
- 50Ah
- Cold cranking amps (EN)
- 815A
- Technology
- Spiral AGM
- Dimensions (L × W × H)
- 254 × 175 × 200 mm
Price:
€181.81
Tax included
VAT included. The exact shipping cost is shown in the cart before you pay.
Secure payment
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Shipping with no surprises
For Spain, Portugal, France, Germany, Italy, Belgium and the Netherlands you see the exact cost before paying. For the rest of Europe we send you a shipping quote, with no obligation.
14 days to return your order
If it does not fit, you have 14 days from delivery to return it unused.
Does it fit your vehicle? Check by number plate or VIN
Enter your number plate or chassis number (VIN): we check whether this battery is compatible with your vehicle.
Where the Optima RTC-4.2 fits
The Optima RTC-4.2 is a starter battery for cars without Start-Stop: it delivers the current the starter motor needs and then powers lights, control units and audio with the engine off. If your car has no Start-Stop and had a 50 Ah battery, the RTC-4.2 is a direct replacement.
At 50 Ah it covers petrol compacts and small diesels, the best-selling format in Europe. The RTC-4.2 belongs to the Optima OPTIMA RED TOP range. See all Optima batteries
Optima RTC-4.2 vs RTR-3.7 and RTS-3.7: differences
Torn between the RTC-4.2 and another similar Optima? This is what changes:
| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Optima RTC-4.2 (this one) | 50 Ah | 815 A | 254 × 175 × 200 | 18.5 kg |
| Optima RTR-3.7 | 44 Ah | 730 A | 237 × 172 × 197 | 15.6 kg |
| Optima RTS-3.7 | 44 Ah | 730 A | 237 × 172 × 197 | 15.6 kg |
- Optima RTR-3.7: 6 Ah less, 85 A less cranking power, a different case (237 × 172 × 197 mm).
- Optima RTS-3.7: 6 Ah less, 85 A less cranking power, a different case (237 × 172 × 197 mm).
Optima RTC-4.2 codes and part numbers
Look for any of these RTC-4.2 codes on your current battery or in the manufacturer's catalogue:
| Commercial reference | RTC-4.2 |
|---|---|
| ETN code | 801287000 (also 801 287 000) |
| EAN | 4016987113455 |
| Case size according to Optima | 34C (BCI) |
| Base hold-down | B00 |
| Also known as | Optima 801287000 · Optima 801 287 000 |
| Not to be confused with | Optima RTF-4.2 (50 Ah, 815 A, positive terminal on the left), Optima RTR-4.2 (50 Ah, 815 A, positive terminal on the right), Optima RTS-4.2 (50 Ah, 815 A, positive terminal on the left) |
Equivalents and alternatives to the Optima RTC-4.2
As the RTC-4.2 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.
| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Optima RTR-4.2 | Spiral AGM | 50 Ah | 815 A | 254 × 175 × 200 |
| Optima RTS-4.2 | Spiral AGM | 50 Ah | 815 A | 254 × 175 × 200 |
| Optima RTU-4.2 | Spiral AGM | 50 Ah | 815 A | 254 × 175 × 200 |
Before ordering the RTC-4.2, check this
- The RTC-4.2 needs 254 × 175 × 200 mm of space: measure it with the hold-down clamp in place.
- With 50 Ah, the RTC-4.2 replaces an original battery of that capacity or slightly less.
- Cold cranking: 815 A (EN), equal to or higher than the original.
- The RTC-4.2 is AGM: it replaces an AGM or an EFB of the same size. You can swap an EFB for an AGM, but not an AGM for an EFB.
Inside the RTC-4.2: spiral AGM technology
The RTC-4.2 is a spiral-cell AGM battery. Perfect for 4x4s, marine use and vehicles with lots of electronics.
Frequently asked questions about the Optima RTC-4.2
Optima RTC-4.2 or RTR-3.7?
Compared with the RTC-4.2, the Optima RTR-3.7 has 6 Ah less and 85 A less cranking power. The RTC-4.2 cranks harder; the RTR-3.7 is only a good option if your original battery says 730 A or less. Mind the space: the RTR-3.7 measures 237 × 172 × 197 mm.
What is the ETN code of the Optima RTC-4.2?
801287000, also written 801 287 000. The ETN (European Type Number) is printed on the label and used in parts catalogues.
Can the Optima RTC-4.2 be used in a car with Start-Stop?
Yes. As an AGM battery, the RTC-4.2 handles automatic engine stop and brake energy recovery, and it can replace an EFB of the same size.
How much does the Optima RTC-4.2 weigh?
The RTC-4.2 weighs 18.5 kg. For reference, the Optima RTR-3.7 (44 Ah) weighs 15.6 kg.
Which battery is equivalent to the Optima RTC-4.2?
Only other AGM batteries with its dimensions and polarity: Optima RTR-4.2, Optima RTS-4.2 and Optima RTU-4.2. Neither an EFB nor a conventional battery replaces the RTC-4.2.
How long does a car battery like the Optima RTC-4.2 last?
Between 4 and 6 years in normal use. Very short trips, extreme heat and leaving the car parked for weeks without starting it shorten its life.
More batteries to compare with the RTC-4.2
- More car batteries
- The whole Optima range
- Optima RTR-4.2 · 50 Ah, 815 A, 254×175×200 mm
- Optima RTS-4.2 · 50 Ah, 815 A, 254×175×200 mm
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