Optima
Optima BTDC-5.5 · Boat battery 12V 75Ah 975A
Reference: BOL-OPTIMA-BTDC-5.5 · EAN 4016987113592
Optima BTDC-5.5 (ETN 852 188 000, also written 852188000): boat battery with 12 V, 75 Ah and 975 A cold cranking current, measuring 325 × 165 × 238 mm.
Optima BTDC-5.5 · Boat battery 12V 75Ah 975A images
- Voltage
- 12V
- Capacity
- 75Ah
- Cold cranking amps (EN)
- 975A
- Technology
- Spiral AGM
- Dimensions (L × W × H)
- 325 × 165 × 238 mm
Price:
€258.10
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VAT included. The exact shipping cost is shown in the cart before you pay.
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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.
Who the Optima BTDC-5.5 is for
The Optima BTDC-5.5 is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. With 75 Ah, the BTDC-5.5 suits boats that had a battery of that capacity.
The BTDC-5.5 belongs to the Optima OPTIMA BLUE TOP range. See all Optima batteries
Equivalents and alternatives to the Optima BTDC-5.5
No other reference in the catalogue fully matches the dimensions and polarity of the BTDC-5.5; you will find the closest ones among our marine and boat batteries.
Optima BTDC-5.5 vs BTDC-5.0 and BTDC-4.2
The real differences between the BTDC-5.5 and the closest Optima models:
| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Optima BTDC-5.5 (this one) | 75 Ah | 975 A | 325 × 165 × 238 | 27.9 kg |
| Optima BTDC-5.0 | 66 Ah | 765 A | 309 × 172 × 221 | 24.4 kg |
| Optima BTDC-4.2 | 55 Ah | 765 A | 254 × 175 × 200 | 20.6 kg |
- Optima BTDC-5.0: 9 Ah less, 210 A less cranking power, a different case (309 × 172 × 221 mm).
- Optima BTDC-4.2: 20 Ah less, 210 A less cranking power, a different case (254 × 175 × 200 mm).
Spiral AGM technology in the BTDC-5.5
The BTDC-5.5 is a spiral-cell AGM battery. Perfect for 4x4s, marine use and vehicles with lots of electronics.
Check this before ordering the Optima BTDC-5.5
- Length, width and height of the BTDC-5.5: 325 × 165 × 238 mm.
- With 75 Ah, the BTDC-5.5 replaces an original battery of that capacity or slightly less.
- Check the EN amps on your battery: if it says 975 A or less, the BTDC-5.5 covers your engine.
Optima BTDC-5.5 codes and part numbers
Look for any of these BTDC-5.5 codes on your current battery or in the manufacturer's catalogue:
| Commercial reference | BTDC-5.5 |
|---|---|
| ETN code | 852188000 (also 852 188 000) |
| EAN | 4016987113592 |
| Case size according to Optima | 31 (BCI) |
| Base hold-down | B00 |
| Terminal type | 1 & 21 |
| Also known as | Optima 852188000 · Optima 852 188 000 |
| Not to be confused with | Optima BTDC-5.0 (66 Ah, 765 A, positive terminal on the left) |
Frequently asked questions about the Optima BTDC-5.5
Optima BTDC-5.5 or BTDC-5.0?
Compared with the BTDC-5.5, the Optima BTDC-5.0 has 9 Ah less and 210 A less cranking power. The BTDC-5.5 cranks harder; the BTDC-5.0 is only a good option if your original battery says 765 A or less. Mind the space: the BTDC-5.0 measures 309 × 172 × 221 mm.
What is the ETN code of the Optima BTDC-5.5?
852188000, also written 852 188 000. The ETN (European Type Number) is printed on the label and used in parts catalogues.
How much does the Optima BTDC-5.5 weigh?
The BTDC-5.5 weighs 27.9 kg. For reference, the Optima BTDC-5.0 (66 Ah) weighs 24.4 kg.
Which charger does the Optima BTDC-5.5 need?
A charger with an AGM mode. If the battery has dropped below 10.5 V some chargers will not recognise it: use one with a recovery mode or one specific to spiral AGM.
Other options if you are unsure about the BTDC-5.5
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