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Three sizes published, and they interlock

wellenshop Blue lid, 337 × 197 × 268 mm inside, for 100 Ah, connectable

An impact-resistant battery box with a blue lid measuring 337 × 197 × 268 mm inside, for batteries to 100 Ah, resistant to weather, UV, petrol and salt water.

wellenshop battery box with a blue lid

wellenshop Blue lid, 337 × 197 × 268 mm inside, for 100 Ah, connectable

An impact-resistant battery box with a blue lid measuring 337 × 197 × 268 mm inside, for batteries to 100 Ah, resistant to weather, UV, petrol and salt water.

Internal dimensions
Blue model 337 × 197 × 268 mm; red 270 × 180 × 200 mm; yellow 395 × 180 × 200 mm, third, fourth and fifth bullets
Group compatibility
Given in amp-hours rather than groups: red for 50 to 70 Ah, yellow and blue for 100 Ah, first bullet
Built-in outputs
None
Fusing
None
Ventilation
Nowhere in the listing
Strap points
Absent for the blue model; the red and yellow models are described as having a carrying handle, first bullet
Material
Impact-resistant plastic, weather-resistant, UV-resistant, petrol-resistant and salt-water resistant, second bullet; the blue boxes can be connected to one another, fifth bullet
Amazon reference
B0D45FBD4X (same reference on 2 Amazon marketplaces)
EAN
4250968643269
  • Three sizes with their internal dimensions each published separately
  • The blue boxes interlock, so a two-battery bank becomes one assembly
  • Capacity is given in amp-hours, which does not determine the physical fit

Best for: A two-battery bank that should sit as one block rather than two.

≈ €25
Check price on Amazon

Specifications

Internal dimensions
Blue model 337 × 197 × 268 mm; red 270 × 180 × 200 mm; yellow 395 × 180 × 200 mm, third, fourth and fifth bullets
Group compatibility
Given in amp-hours rather than groups: red for 50 to 70 Ah, yellow and blue for 100 Ah, first bullet
Built-in outputs
None
Fusing
None
Ventilation
Nowhere in the listing
Strap points
Absent for the blue model; the red and yellow models are described as having a carrying handle, first bullet
Material
Impact-resistant plastic, weather-resistant, UV-resistant, petrol-resistant and salt-water resistant, second bullet; the blue boxes can be connected to one another, fifth bullet
Amazon reference
B0D45FBD4X (same reference on 2 Amazon marketplaces)
EAN
4250968643269

Three sizes, and the biggest ones lock together.

The dimensions, model by model

Red: 270 × 180 × 200 mm, for 50 to 70 Ah. Yellow: 395 × 180 × 200 mm, for 100 Ah. Blue: 337 × 197 × 268 mm, for 100 Ah.

Three internal sizes, each published. Which to buy comes from measuring the battery, not from the amp-hour figure — a hundred amp-hours of lead and a hundred of lithium are different objects.

The interlock

The blue boxes connect to one another. A two-battery bank becomes one block instead of two things that shift against each other, which on a boat that rolls is the difference between a fixed installation and a moving one.

The resistances

Weather, ultraviolet, petrol and salt water. Four, named individually. Salt water is the unusual one, and on a boat it is the one that matters.

The lines this listing leaves blank

Any ventilation. Any hold-down or strap for the blue model, where the red and yellow are described as having a carrying handle.

A box that does not fix down and does not vent is a container rather than an installation.

Availability

German Amazon store quoted about 25 € when this page was compiled.

American Amazon catalogue carries an entry for it, with nobody selling.

British, French, Italian and Spanish Amazon stores returned nothing at all, so the buy button there runs a search instead of landing on an empty page.

These figures are what Keepa reported on the day this page was last updated. Availability and pricing move without notice.

Prices quoted in this text were read on 16 September 2026. The live price is at the top of the page.

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