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Post diameters published to the half millimetre

L & P Car Design Pair of terminal clamps with M8 bolts, 17.5 and 19 mm

A pair of battery terminal clamps with M8 bolts for standard posts, published with both post diameters and marked for polarity.

L & P Car Design battery terminal clamps with M8 bolts

L & P Car Design Pair of terminal clamps with M8 bolts, 17.5 and 19 mm

A pair of battery terminal clamps with M8 bolts for standard posts, published with both post diameters and marked for polarity.

Post type
Standard tapered posts on 12 V and 24 V batteries — car, lorry and solar batteries named, first bullet
Size
Negative 17.5 mm, positive 19 mm, third bullet — both diameters published
Material
Nowhere in the listing
Plating
Nowhere in the listing
Cable range
Nowhere in the listing
Clamping method
M8 bolt through the cable lug, first and third bullets
Extra outputs
None
Corrosion protection
Terminal grease recommended in the second bullet; it is not supplied
Amazon reference
B0BYDRLW8N (same reference on 6 Amazon marketplaces)
EAN
4260598985035
  • Both post diameters published — 17.5 mm and 19 mm — which is what decides whether they close properly
  • Polarity is marked on the clamps themselves
  • No material and no plating, so corrosion resistance is unknown

Best for: Replacing corroded clamps on a standard vehicle or leisure battery.

≈ €7
Check price on Amazon

Specifications

Post type
Standard tapered posts on 12 V and 24 V batteries — car, lorry and solar batteries named, first bullet
Size
Negative 17.5 mm, positive 19 mm, third bullet — both diameters published
Material
Nowhere in the listing
Plating
Nowhere in the listing
Cable range
Nowhere in the listing
Clamping method
M8 bolt through the cable lug, first and third bullets
Extra outputs
None
Corrosion protection
Terminal grease recommended in the second bullet; it is not supplied
Amazon reference
B0BYDRLW8N (same reference on 6 Amazon marketplaces)
EAN
4260598985035

A pair of clamps with the two measurements that matter.

Seventeen and a half, and nineteen

Negative and positive post diameters, published. Standard battery posts are tapered and the positive is the larger of the two — deliberately, so a negative clamp will not fit a positive post. Those two numbers are what decide whether a clamp closes properly on the battery you have.

Four of the five terminal sets in this family publish them. It is the best-specified line in this whole lot.

The M8 bolt

The cable lug bolts through, which is the arrangement that carries real current. What size lug, and therefore what cable, is not published.

The recommendation

Terminal grease, in the second bullet. Not supplied. It is what keeps the joint from corroding, and corrosion at a battery post is the commonest high-resistance joint on any vehicle.

The lines this listing leaves blank

The material and any plating. Brass, lead and plated steel behave very differently on a battery post, and this listing names none of them.

Availability

German, French, Italian and Spanish Amazon stores quoted 7 € to 9 € when this page was compiled.

British Amazon store carries it too, priced in its own currency, which the euro range above deliberately omits.

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

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.

More battery terminals

  • RTSHUK pure copper battery terminals in three pairs

    RTSHUK Three pairs of pure copper terminals, marked polarity, threaded

    Three pairs of pure copper battery terminals with marked polarity and a threaded post, intended for battery extension, parallel connection and earthing.

    Post type
    Standard posts, from the title; 12 V and 24 V named
    Size
    Nowhere in the listing
    Material
    Pure copper, third bullet, named for corrosion resistance, durability and conductivity
    Plating
    Nowhere in the listing
    Cable range
    Nowhere in the listing
    Clamping method
    A thread on the clamp eases assembly, second bullet
    Extra outputs
    Not as separate posts; the second bullet names battery extension, parallel connection and earthing as the intended uses
    Corrosion protection
    Copper named as corrosion resistant; the third bullet also claims it avoids voltage distortion
    Amazon reference
    B0FJXQJLXF (same reference on 5 Amazon marketplaces)
    EAN
    0607604977396
    • Three pairs, which is the quantity a parallel bank of two or three batteries needs
    • Polarity clearly marked on each clamp
    • No post diameters

    Best for: Building a parallel bank of two or three batteries in one purchase.

    ≈ €12
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  • Larebidtex universal battery terminals with bolts

    Larebidtex Pair of universal terminals with bolts, for vehicle, boat and motorhome

    A pair of universal battery terminals with bolts, offered for cars, boats, motorhomes and caravans, with no specification published in the listing.

    Post type
    Nowhere in the listing
    Size
    Nowhere in the listing
    Material
    Nowhere in the listing
    Plating
    Nowhere in the listing
    Cable range
    Nowhere in the listing
    Clamping method
    Described as having bolts, from the title; the size is not stated
    Extra outputs
    Nowhere in the listing
    Corrosion protection
    Nowhere in the listing
    Amazon reference
    B0FGQ7DNZC (same reference on 5 Amazon marketplaces)
    EAN
    0721820978866
    • The intended vehicles are named — car, boat, motorhome, caravan
    • A pair rather than a single terminal, so both posts are covered
    • The listing has no bullet points at all — every specification line is empty

    Best for: Nothing this page can identify, which is the finding rather than a judgement on the product.

    ≈ €11
    Check price on Amazon
  • Bolatus pure copper battery terminals with M8 bolts

    Bolatus Pair of pure copper terminals with M8 bolts, 17.5 and 19 mm

    A pair of pure copper battery terminals with M8 bolts, published with both post diameters, for 12 V and 24 V batteries.

    Post type
    Standard tapered posts on 12 V and 24 V batteries, from the title
    Size
    Negative 17.5 mm, positive 19.0 mm, second bullet
    Material
    Pure copper, third bullet, named for conductivity, corrosion resistance and durability
    Plating
    Nowhere in the listing
    Cable range
    Nowhere in the listing
    Clamping method
    M8 bolt, first bullet
    Extra outputs
    None
    Corrosion protection
    Copper named as corrosion resistant; no coating or grease is mentioned
    Amazon reference
    B09VD6S6WF (same reference on 4 Amazon marketplaces)
    EAN
    5060931280709
    • Pure copper named, which is the best conductor among the materials used for terminals
    • Both post diameters published
    • Bare copper corrodes visibly on a battery post without grease, which the listing does not mention

    Best for: A single heavy cable per post, where conductivity matters more than convenience.

    ≈ €7
    Check price on Amazon

Others on the same shelf

  • HB-DIGITAL M20 IP68 cable glands with locknuts

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    Ten M20 cable glands for 6 to 12 mm cable, rated IP68, in UV-resistant flame-retardant plastic with rubber seals, clamping lamellae and locknuts.

    Thread size
    M20, from the title
    Clamping range
    6 to 12 mm cable diameter, from the title
    Ingress rating
    IP68 — dust-tight and rated for continuous immersion, first bullet
    Material
    Weatherproof, flame-retardant plastic, third bullet
    UV resistance
    Stated in the third bullet
    Temperature range
    Nowhere in the listing
    Supplied parts
    Gland, rubber seal, locknut and clamping lamellae, from the title
    Amazon reference
    B09V5N4LWB (same reference on 5 Amazon marketplaces)
    EAN
    4063328036508
    • IP68 rather than IP67, which covers continuous immersion rather than temporary
    • Locknuts and clamping lamellae both included, which are what the seal actually depends on
    • No temperature range

    Best for: A junction box on a roof or in the ground where water is a certainty.

    ≈ €6
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  • SeKi M20 polyamide cable glands in black with locknuts

    SeKi Ten M20 × 1.5 glands for 7–12 mm cable, polyamide, IP67

    Ten M20 × 1.5 polyamide cable glands for 7 to 12 mm cable with locknuts, rated IP67, 35 mm long with 24 and 27 mm spanner flats.

    Thread size
    M20 × 1.5, first bullet — the thread pitch is published, which the other gland here omits
    Clamping range
    7 to 12 mm cable diameter, first bullet
    Ingress rating
    IP67, fourth bullet
    Material
    Polyamide, halogen-free and silicone-free, third bullet, with resistance to oils, bases, greases and chlorinated solvents, and limited resistance to acids
    UV resistance
    Nowhere in the listing
    Temperature range
    Nowhere in the listing
    Supplied parts
    Gland and locknut; overall length 35 mm, spanner flats 24 and 27 mm, second and fifth bullets
    Amazon reference
    B083V9515G (same reference on 6 Amazon marketplaces)
    EAN
    4053171977653
    • The material is named — polyamide — with its chemical resistances and its one weakness listed
    • Overall length and spanner sizes published, which decide whether it fits a crowded box
    • IP67 rather than IP68

    Best for: An enclosure where the gland has to be tightened with a spanner in a confined space.

    ≈ €7
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  • Brennenstuhl Garant V2 cable reel with three sockets and a carrying handle

    Brennenstuhl Garant V2, 25 m, IP44, three sockets with self-closing lids, cablepilot handle

    A twenty-five metre IP44 outdoor cable reel in H05VV-F3G1.5 with three splash-proof sockets with self-closing lids and overheat protection.

    Cable length
    25 m, first bullet
    Cross-section
    H05VV-F3G1.5, first bullet
    Coiled
    Nowhere in the listing
    Uncoiled ratings
    Nowhere in the listing — no wattage or amperage appears anywhere
    Thermal cut-out
    Overheat protection for maximum safety, first bullet; the mechanism is not described
    Socket count
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    Ingress rating
    IP44; stated as suitable for temporary and time-limited outdoor use, second bullet
    Construction
    A special-plastic drum body on a galvanised carrying frame with a rotating handle for comfortable rewinding; a braking cam on the rear fixes the drum during transport; the cablepilot carrying handle guides the cable and stops it slipping while winding and unwinding, third to fifth bullets
    Amazon reference
    B0DM5J8B6Q (same reference on 5 Amazon marketplaces)
    EAN
    4007123695119
    • Self-closing socket lids, so an unused outlet is covered without anyone remembering
    • A carrying handle that doubles as a cable guide during winding
    • No wattage or current rating anywhere in the listing

    Best for: Outdoor work where the reel is carried, wound and unwound constantly.

    ≈ €61
    Check price on Amazon

All battery terminals