Skip to content

Battery chargers

Bosch 0189921040

A battery charger whose listing publishes an effective charging current of 5 A, a voltage figure of 14.7 V and dimensions of 169 × 81 × 54 mm, in two bullets.

Bosch battery charger unit

Bosch 0189921040

A battery charger whose listing publishes an effective charging current of 5 A, a voltage figure of 14.7 V and dimensions of 169 × 81 × 54 mm, in two bullets.

Charging current
5 A effective (maker’s bullet)
Voltage
14.7 V, published by the maker as "input voltage" (maker’s bullet)
Dimensions
169 × 81 × 54 mm (maker’s bullet)
Battery chemistries
NOT published — no AGM, no gel, no lithium named.
Charge programme
The maker puts nothing in writing on this.
Listing bullets
Two. One is a compatibility warning; the other is the technical line above.
Amazon reference
B0CGJ8TLYZ (one reference across 5 Amazon marketplaces)
EAN
4047026640441
  • Publishes physical dimensions, which matters if the charger lives in a fixed place
  • 5 A is a sensible current for a motorcycle battery
  • Publishes no battery chemistry at all — AGM, gel and lithium all want different treatment

Best for: A rider who already knows this model and is replacing one.

≈ €65
Check price on Amazon

Specifications

Charging current
5 A effective (maker’s bullet)
Voltage
14.7 V, published by the maker as "input voltage" (maker’s bullet)
Dimensions
169 × 81 × 54 mm (maker’s bullet)
Battery chemistries
NOT published — no AGM, no gel, no lithium named.
Charge programme
The maker puts nothing in writing on this.
Listing bullets
Two. One is a compatibility warning; the other is the technical line above.
Amazon reference
B0CGJ8TLYZ (one reference across 5 Amazon marketplaces)
EAN
4047026640441

The whole technical bullet, quoted

“Battery charger, length mm: 169, width mm: 81, height mm: 54, input voltage V: 14.7, effective charging current A: 5.”

That is one of the listing’s two bullets. The other asks you to check compatibility against your own vehicle data.

What is published

A charging current of 5 A — a sensible figure for a motorcycle battery, matching two other chargers in this family.

Dimensions, which matter more than they look: a charger that lives permanently on a garage wall or in a top box has to fit somewhere.

What is not published, and it is the whole decision

The battery chemistries. Flooded lead-acid, AGM, gel, EFB and lithium (LiFePO4) each want a different voltage profile, and using the wrong one shortens a battery’s life or damages it.

Three chargers in this family list the chemistries they handle. This listing lists none.

Also absent: the charge programme, any IP rating, any protection features, and any warranty statement.

The voltage figure as published

The bullet labels 14.7 V as an input voltage. 14.7 V is a charging voltage rather than a mains figure. It is reported here as the seller wrote it, because that is what was published.

Availability

Between 65 € and 80 € across the German, French, Italian and Spanish Amazon stores, in the single reading behind this page.

An entry with nobody selling against it sits in the American Amazon catalogue.

Nothing whatever came back from the British Amazon store, so the buy button there opens a search instead of an empty page.

What Keepa returned in the single reading behind this page. Availability and prices move without notice.

Prices quoted in this text were read on 18 September 2026. The live price is at the top of the page.

More battery chargers

  • Dino KRAFTPAKET 4 A battery charger with display

    Dino KRAFTPAKET 136312

    A 6 V/12 V 4 A automatic charger publishing six named programmes by voltage and current, an eleven-step charge cycle, IP65 protection and a built-in battery tester.

    Programmes
    Six, published individually: 7.2 V-1 A / 7.4 V-1 A / 14.4 V-1 A / 14.7 V-1 A / 14.4 V-4 A / 14.7 V-4 A (maker’s bullet)
    Charge steps
    Eleven, each named: measurement, desulphation, soft start, four constant-current, constant-voltage, float, analysis, maintenance (maker’s bullet)
    Battery types
    Lead-acid, WET, MF, GEL and AGM, 1.2–120 Ah (maker’s bullet)
    Protection
    Reverse-polarity proof, spark-free, IP65 jet-water protected (maker’s bullet)
    Tester
    Shows battery voltage; works on 12 V without mains, 6 V needs mains (maker’s bullet)
    Lithium
    NOT named — the chemistries listed are all lead-based.
    Amazon reference
    B07KSFBMXF (one reference across 5 Amazon marketplaces)
    EAN
    4003342177962
    • Publishes six programmes by voltage AND current — nothing else here is that specific
    • Names all eleven charge steps, so what the charger is doing is legible
    • No lithium chemistry — the list is entirely lead-based

    Best for: A lead-acid, gel or AGM motorcycle battery where you want to see what the charger is doing.

    ≈ €30
    Check price on Amazon
  • CTEK MXS 5.0 battery charger with clamps

    CTEK MXS 5.0

    A 12 V 5 A intelligent charger with a dedicated AGM programme, a RECOND mode for deeply discharged batteries, patented desulphation and temperature compensation.

    Output
    12 V, 5 A (from the title)
    AGM mode
    A dedicated charging programme for AGM batteries (maker’s bullet)
    RECOND mode
    Stated to restore batteries in poor condition or deeply discharged (maker’s bullet)
    Desulphation
    Patented, using pulsing current and voltage (maker’s bullet)
    Temperature
    Built-in automatic charging voltage compensation for extreme heat or cold (maker’s bullet)
    Lithium
    Not stated in these bullets — the NOCO charger in this family names LiFePO4 explicitly.
    Amazon reference
    DE B00DEID79G · US B06Y2FMF83 · GB B06Y2FMF83 · FR B06Y2FMF83 · IT B06Y2FMF83 · ES B06Y2FMF83
    EAN
    7340103401858
    • A five-year warranty, which is the longest published here
    • Splash- and dust-proof, short-circuit proof, with spark-free reverse-polarity protected clamps
    • No lithium chemistry named in these bullets — increasingly relevant on modern motorcycles

    Best for: A lead-acid or AGM motorcycle battery kept on charge through a winter.

    ≈ £60 / €76
    Check price on Amazon
  • Husgw 8 A battery charger with LCD display

    Husgw ZYX-J30

    An 8 A charger for 12 V and 24 V lead-acid batteries from 2 to 150 Ah, with high- and low-frequency pulse repair, an LCD display and automatic shut-off when full.

    Output
    8 A at 12 V or 24 V (from the title)
    Battery range
    12 V / 24 V lead-acid, 2 to 150 Ah (maker’s bullet)
    Repair function
    High- and low-frequency pulse technology (maker’s bullet)
    Display
    Large LCD showing charge and battery status (maker’s bullet)
    Protection
    Under-voltage, short-circuit and over-current protection; ABS housing (maker’s bullet)
    Lithium
    NOT named — lead-acid only.
    Amazon reference
    B09DTXCK9D (one reference across 6 Amazon marketplaces)
    EAN
    0794304347236
    • The only charger here that handles 24 V as well as 12 V
    • The highest current here at 8 A, which suits a larger battery
    • 8 A is more current than a small motorcycle battery wants

    Best for: A garage with a car, a van and a motorcycle, where 24 V occasionally turns up.

    ≈ €28
    Check price on Amazon

The rest of this rider’s shelf

  • Bosch DOT 4 brake fluid 500 ml bottle

    Bosch DOT 4, 500 ml

    A 500 ml DOT 4 brake fluid published to three standards with a dry boiling point of at least 230 °C and a stated two-year replacement interval.

    Dry boiling point
    ≥ 230 °C (maker’s bullet) — the only boiling point published in this family
    Standards
    FMVSS § 571.116 DOT 4, SAE J 1704, ISO 4925 Class 4 (maker’s bullet)
    Replacement interval
    Every 2 years, with the vehicle manufacturer’s own requirement taking precedence (maker’s bullet)
    Volume
    500 ml (from the title)
    ABS
    Inhibitor components stated to act as a protective lubricant against noise, wear and corrosion (maker’s bullet)
    Stated compatibility
    Suitable for vehicles manufactured before 2010 (maker’s bullet)
    Amazon reference
    B00P3XXJFC (one reference across 6 Amazon marketplaces)
    EAN
    4047025114592
    • Publishes a dry boiling point in degrees — the only fluid in this family to do so
    • Publishes a change interval AND defers to the vehicle manufacturer on it
    • The wet boiling point is not published, and that is the figure that degrades

    Best for: One brake bleed on a machine specified for DOT 4, opened and finished the same day.

    ≈ £13 / €11
    Check price on Amazon
  • Liqui Moly DOT 4 brake fluid 500 ml bottle

    Liqui Moly DOT 4, 500 ml

    A 500 ml DOT 4 brake fluid published to three standards with a viscosity figure of 1800 mm²/s, stated miscible with high-quality synthetic brake fluids.

    Viscosity
    1800 mm²/s (from the title)
    Specifications
    FMVSS 116 DOT 3 / 116 DOT 4 | ISO 4925 Class 3 / Class 4 | SAE J 1703 / J 1704 (maker’s bullet)
    Volume
    500 ml (from the title)
    Miscibility
    Miscible and compatible with high-quality synthetic brake fluids (maker’s bullet)
    Low temperature
    Stated excellent low-temperature behaviour (maker’s bullet)
    Boiling points
    Stated extremely high wet and dry — no figure is given (maker’s bullet)
    Amazon reference
    B07L4T6LPF (one reference across 6 Amazon marketplaces)
    EAN
    4100420211560
    • Publishes a viscosity figure, which no other fluid in this family does
    • Three standards including the ISO class
    • Boiling points described rather than given, where one rival publishes ≥ 230 °C

    Best for: One brake bleed, on a machine that sees cold mornings.

    ≈ €7
    Check price on Amazon
  • Liqui Moly SL6 DOT 4 brake fluid five-litre container

    Liqui Moly SL6 DOT 4, 5 L

    A five-litre DOT 4 brake fluid published against FMVSS 116, ISO 4925 Class 6 and SAE J 1703/J 1704, with car manufacturer recommendations listed.

    Specifications
    FMVSS 116 DOT 3 / 116 DOT 4 | ISO 4925 Class 6 | SAE J 1703 / J 1704 (maker’s bullet)
    Class
    ISO 4925 Class 6 — higher than the Class 3/4 published by the other fluids in this family
    Volume
    5 litres (from the title)
    Stated recommendations
    Audi, BMW, GM Europe, Seat, Skoda and VW approvals — all car manufacturers (maker’s bullet)
    Boiling points
    Stated extremely high wet and dry boiling points — no figure is given (maker’s bullet)
    Miscibility
    Miscible and compatible with high-quality synthetic brake fluids (maker’s bullet)
    Amazon reference
    B07N94TH1L (one reference across 5 Amazon marketplaces)
    EAN
    4100420211690
    • Publishes three standards and an ISO class above everything else here
    • States miscibility with other synthetic fluids explicitly
    • Wet and dry boiling points are described as extremely high and never given as numbers

    Best for: A full brake and clutch bleed where the machine’s manual permits a Class 6 DOT 4.

    ≈ €49
    Check price on Amazon

All battery chargers