Tudor TZ800 · Marine battery 12V 95Ah 800A EFB
Specifications
| Brand | TUDOR |
|---|---|
| Part number | TZ800 |
| Capacity (C20) | 95Ah (c20) |
| Technology | EFB |
| Length | 306mm |
| Width | 173mm |
| Height | 222mm |
| Weight | 21.80 Kg |
| Terminal layout | Positive left |
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Tudor TZ800 95Ah 800A is a marine battery, vibration- and deep-discharge resistant, suitable both for outboard engine starting and for onboard auxiliary services (navigation lights, GPS, sonar, fridge). Sealed and maintenance-free.
Why this marine battery?
- Marine designbuilt for boat swell and vibration
- Dual functionstarts the engine and powers onboard services
- Sealed and safemaintenance-free even when the boat rolls
Capacity
95 Ah
Cold cranking
800 A
Dimensions
306×173×222 mm
Technology
EFB
Polarity
Positive on the left
Weight
21,8 kg
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Marine battery Tudor TZ800 95Ah 800A 12V
12VVoltage
95AhCapacity
800ACold cranking
21.80kgWeight
The Tudor TZ800 with EFB technology is a marine battery with 95 Ah and 800 A of cold cranking current (EN) for motor and sailing boats, both for engine starting and onboard services. Its 306 × 173 × 222 mm and the positive terminal on the left make it the exact replacement for the 95 Ah battery fitted as standard to many boats.
- Resistant to humidity and salt air.
- Sealed: no spills or gases in the locker.
- Ready for starting outboard and inboard engines.
- EFB: the evolution of the conventional battery for basic Start-Stop cars.
What the Tudor TZ800 is for
With 95 Ah, the Tudor TZ800 covers motor and sailing boats, both for engine starting and onboard services. At the end of the season, charge it fully before winter storage. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 21.80 kg, EN taper post terminals and Korean B1 hold-down.
Will it fit your current battery tray?
It has external dimensions of 306 × 173 × 222 mm and weighs 21.80 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a Korean B1 hold-down and EN taper post terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
Technology inside the Tudor TZ800
Within the Tudor catalogue, the TZ800 is the 95 Ah model designed for this application.
An EFB is a reinforced flooded battery: its plates retain the active material better and tolerate the cycling imposed by a simple Start-Stop system, at a lower cost than an AGM.
What Tudor does differently
Tudor has made batteries in Spain for more than a century and remains one of the brands most trusted by Spanish workshops for reliability and value. All the Tudor batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Warranty and coverage
The Tudor TZ800 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Usage and maintenance tips
As a service battery, avoid routine discharges below 50% to extend its cycle life. Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections.
When you get it and how to return it
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
BCOM-TUDOR-TZ800
Data sheet
- Voltage (V)
- Length
- 306mm
- Width
- 173mm
- Height
- 222mm
- Weight
- 21.80 Kg
- Technology
- EFB
- EAN
- 3661024057813
- Terminal layout
- Positive left
- Terminal type
- EN taper post
- Hold-down
- Korean B1
- Cold cranking amps (EN)
- 800A
- Capacity (C20)
- 95Ah (c20)
Specific References
- EAN13
- 3661024057813
- MPN
- TZ800
Codes and references Tudor TZ800
| Brand | Tudor · see all batteries Tudor |
|---|---|
| Manufacturer reference (MPN) | TZ800 |
| EAN-13 barcode | 3661024057813 |
| Dimensions (length × width × height) | 306 × 173 × 222 mm (306x173x222) |
Comparison: Tudor TZ800 vs equivalents
The Tudor TZ800 is interchangeable with these equivalent references: TL955 (Tudor), EL955 (Exide).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Tudor
TZ800
This battery
|
|||
Tudor
TL955
|
12V 95Ah 800A | EFB | €147.70 |
Exide
EL955
|
12V 95Ah 800A | EFB | €140.70 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
How to change the battery
Guide to replace a marine battery (cranking or house) in 20-30 minutes. Moisture and vibration in marine environments require reinforced hold-downs and sealed copper terminals.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery compartment
Usually under the passenger bench, engine room or a dedicated ventilated compartment. Verify the compartment is dry and well ventilated before opening.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Marine batteries are heavy (15-50 kg). If it has rope handles, use them; otherwise have a carry strap ready. Secure the new one with metal hold-downs (not plastic) to resist sea-state vibration.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify circuit + water protection
Apply dielectric grease on terminals to prevent salt-air corrosion. Check the engine charging circuit delivers 13.8-14.4 V at 2,000 rpm.
Frequently asked questions
How is the Tudor TZ800 battery installed in the vehicle?
In most boats it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Tudor TZ800 battery last?
Expected lifespan of the Tudor TZ800 is 4 to 7 years in regular use (depends on technology and climate). In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.
What are the dimensions of the Tudor TZ800 battery?
Dimensions (length × width × height) are 306×173×222 mm — also written as 306x173x222 mm — following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Is the TZ800 valid for my vehicle?
Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The TZ800 typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the TZ800 model?
Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop boats. See the "Equivalents" section to view recommended options at the same performance level.
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