Batteries for Karcher KM 75/40 W Bp
Which battery does a Karcher KM 75/40 W Bp need?
Battery analysis for your Karcher KM 75/40 W Bp
Quick answer You need an GEL battery of 77 Ah. Our recommendation: TROJAN 24-GEL.
Prices and availability updated on 30/10/2026
Based on the batteries we found for your vehicle, our experts help you pick the right one.
📋 What we found
For your Karcher KM 75/40 W Bp we found 3 compatible batteries.
📏 Battery size
The list contains batteries in different sizes or capacities (Ah). In many cases both variants fit, but it's worth checking your compartment dimensions and the Ah of your original battery before buying. Choose the one with the same dimensions as your current battery: a bigger one may not fit the compartment or the hold-down. If several match your size, the higher capacity gives more headroom for cold starts.
⭐ Our recommendation
For your Karcher KM 75/40 W Bp we recommend the TROJAN 24-GEL (GEL, 77 Ah). It also has the highest capacity (Ah) on the list — more autonomy to power consumers with the engine off and more reserve for prolonged loads.
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Verified selection
- Class: Floor sweeper batteries
- Brand: Karcher
- Model: KM 75/40 W Bp
Start-Stop & high energy demand batteries
AGM or EFB battery for start-stop vehicles and for cars with high energy demand (many electrical consumers, frequent starts). More charge cycles, better charge recovery and longer service life.
Conventional Battery
This is a standard or conventional battery for vehicles without a start-stop system
| Category | Make | Reference | Capacity | Dimensions | Technology | Price | |
|---|---|---|---|---|---|---|---|
| Conventional Battery | TROJAN | 24-GEL | 77 Ah | 276×171×236 mm | GEL | €634.30 | More info |
Batteries specified by the manufacturer
These references are not published in the shop: ask for a quote and we reply the same day with price and lead time.
Frequently asked questions
- The Karcher KM 75/40 W Bp uses the battery shown on this page. Check voltage, capacity and dimensions before ordering. If there is no published price, ask for a quote and we reply the same day.
- Yes, as long as it has the same voltage, fits in the battery compartment and the Karcher KM 75/40 W Bp charger is compatible. More capacity (Ah) means more run time; changing the voltage or battery type without adapting the charger can damage the equipment.
- Many machines run at 24, 36 or 48 V with several 6, 8 or 12 V batteries connected in series (voltages add up; the Ah capacity is that of one unit). The model page tells you how many units it takes. Always replace the whole set with identical batteries of the same age.
- Not advisable. A starter battery delivers a lot of current for a few seconds; a deep-cycle battery has thick plates built to be discharged to 50-80% and recharged every day. In traction, cleaning or mobility equipment a starter battery lasts very few cycles.
- Some references are not published in the shop: click "Request a quote" and we reply the same working day with price and lead time. Those with a price can be bought online and ship the same day if you order before 6:00 pm.