Optima
Optima RTS-4.2 · Car battery 12V 50Ah 815A
Reference: BOL-OPTIMA-RTS-4.2 · EAN 4016987113462
Optima RTS-4.2 (ETN 802 250 000, also written 802250000): car battery (spiral AGM) with 12 V, 50 Ah and 815 A cold cranking current, measuring 254 × 175 × 200 mm, with the positive terminal on the left. With the positive terminal on the right, the exact counterpart is the Optima RTR-4.2.
Optima RTS-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
- Polarity
- Positive terminal on the left
Price:
€183.37
Tax included
VAT included. The exact shipping cost is shown in the cart before you pay.
Secure payment
PayPal, bank transfer or cash on delivery, always over an encrypted connection.
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.
Who the Optima RTS-4.2 is for
The Optima RTS-4.2 is made for petrol and diesel cars without automatic engine stop. If your car has no Start-Stop and had a 50 Ah battery, the RTS-4.2 is a direct replacement.
At 50 Ah it covers petrol compacts and small diesels, the best-selling format in Europe. The RTS-4.2 belongs to the Optima OPTIMA RED TOP range. The full range of Optima batteries
Optima RTS-4.2 vs RTS-3.7, RTR-4.2 and RTU-3.7: differences
What sets the RTS-4.2 apart from its neighbours in the Optima range:
| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Optima RTS-4.2 (this one) | 50 Ah | 815 A | 254 × 175 × 200 | left | 18 kg |
| Optima RTS-3.7 | 44 Ah | 730 A | 237 × 172 × 197 | left | 15.6 kg |
| Optima RTR-4.2 | 50 Ah | 815 A | 254 × 175 × 200 | right | 18 kg |
| Optima RTU-3.7 | 44 Ah | 730 A | 237 × 172 × 197 | left | 15.7 kg |
- Optima RTS-3.7: 6 Ah less, 85 A less cranking power, a different case (237 × 172 × 197 mm).
- If the positive terminal of your battery is on the other side, the one you need is the Optima RTR-4.2 (positive terminal on the right).
- Optima RTU-3.7: 6 Ah less, 85 A less cranking power, a different case (237 × 172 × 197 mm).
Optima RTS-4.2 codes and part numbers
Shops, garages and catalogues identify the RTS-4.2 with these codes:
| Commercial reference | RTS-4.2 |
|---|---|
| ETN code | 802250000 (also 802 250 000) |
| EAN | 4016987113462 |
| Case size according to Optima | 34 (BCI) |
| Base hold-down | B00 |
| Also known as | Optima 802250000 · Optima 802 250 000 |
| Not to be confused with | Optima RTC-4.2 (50 Ah, 815 A), Optima RTR-4.2 (50 Ah, 815 A, positive terminal on the right), Optima YTS-4.2 (55 Ah, 765 A) |
Equivalents and alternatives to the Optima RTS-4.2
As the RTS-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 RTC-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 RTS-4.2, check this
- The RTS-4.2 needs 254 × 175 × 200 mm of space: measure it with the hold-down clamp in place.
- Polarity of the RTS-4.2: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- Your current battery should say about 50 Ah; a little more is also fine.
- Check the EN amps on your battery: if it says 815 A or less, the RTS-4.2 covers your engine.
- The RTS-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.
What it means that the RTS-4.2 is spiral AGM
Inside, the RTS-4.2 rolls its plates into cylindrical cells (spiral AGM). It is the basis of OPTIMA batteries.
Frequently asked questions about the Optima RTS-4.2
Optima RTS-4.2 or RTS-3.7?
Compared with the RTS-4.2, the Optima RTS-3.7 has 6 Ah less and 85 A less cranking power. The RTS-4.2 cranks harder; the RTS-3.7 is only a good option if your original battery says 730 A or less. Mind the space: the RTS-3.7 measures 237 × 172 × 197 mm.
What is the difference between the Optima RTS-4.2 and the RTR-4.2?
They are the same battery with the terminals swapped: positive terminal on the left on the RTS-4.2, positive terminal on the right on the RTR-4.2. Look at your current battery with the terminals facing you and pick the one that matches. That is why their ETNs only differ in the middle group: 802 250 000 for the RTS-4.2 and 803 251 000 for the RTR-4.2.
What is the ETN code of the Optima RTS-4.2?
802250000, also written 802 250 000. The ETN (European Type Number) is printed on the label and used in parts catalogues.
Can the Optima RTS-4.2 be used in a car with Start-Stop?
Yes. As an AGM battery, the RTS-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 RTS-4.2 weigh?
The RTS-4.2 weighs 18 kg. For reference, the Optima RTS-3.7 (44 Ah) weighs 15.6 kg.
Which battery is equivalent to the Optima RTS-4.2?
Only other AGM batteries with its dimensions and polarity: Optima RTC-4.2 and Optima RTU-4.2. Neither an EFB nor a conventional battery replaces the RTS-4.2.
How long does a car battery like the Optima RTS-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.
Other options if you are unsure about the RTS-4.2
- Other car batteries
- More Optima models
- Optima RTF-4.2 · 50 Ah, 815 A, 254×185×184 mm
Reviews
This product has no reviews yet. If you own it, tell us how it has gone: it will help whoever is looking at it now.
