Who are Work System?
See our brand story to know more about us and our values. 
Skiljerelä 140A

Dc/DC Charger D250SE 20A Charging between batteries.

Art. nr:928-D250SE

D250SE The new technology between a starter battery and an extra battery. Works like a powerful built-in charger when you’re on the go.
240 £
Exclude 20 % vat


Length: 210 mm
Height: 110 mm
Width: 65 mm
Weight: 0.0 KG


Mounting time: 30 Min
Delivery time: 1 day
Warranty: 24 Mon
Product information
Powerful built-in charging when you’re on the move.
The D250SE, with its award-winning Swedish technology, allows dual inputs so you can enjoy your vehicle more with maximum battery capacity and is a perfect charger for vehicles without access to the electricity grid.
The D250SE is a fully automatic, 5-stage charger that delivers up to 20A of power to all 40 – 300Ah lead-acid 12V batteries, including wet, EFB, MF, Ca/Ca, AGM, Gel and even lithium
It has selectable charging voltages for AGM batteries and can use power through dual input from generators, solar panels and wind power. When the service battery is fully charged, the D250SE will automatically redirect the maintenance charge current to the starter battery. The D250SE can maintain a stable output of up to 20 A for vehicles equipped with intelligent ECU-controlled generators and also has a temperature sensor for optimised charging regardless of weather conditions.

20A fully automatic temperature-compensated charging for batteries from 40 -300Ah when you're on the move
Dual input (solar panel and generator in parallel)
Compatible with smart generator
Battery separation, replacing diodes and VSR relays
Solar panel controller with Maximum Power Point Tracking (MPPT)
Selectable AGM option – 14.4V or 14.7V
Maximised charging for better battery life and performance
Temperature sensor to compensate for hot or cold weather conditions
Splash and dust protected (IP65)
Compatible with SMARTPASS 120 for the ultimate 140A power management solution

Input power 11.5-23V, 25A
Output power 14.4V, 20A max
Back-up current* Equivalent to less than 1 Ah/month
Ambient temperature -20°C to +50°C (-4°F to +122°F)
Battery types All types of lead-acid, 12V, WET, MF, Ca/Ca, AGM, EFB, GEL
Battery capacity 40-300Ah
Warranty 2 years
Casing class IP65
Ripple** less than 4%

Connection kit for inverter 300-700W

The inverter connection kit includes a red & black 16 mm cable, fuse holder, fuse, cable lugs and battery monitor.
120 £
Exclude 20 % vat

Dc/DC Charger D250SE 20A Charging between batteries.

D250SE The new technology between a starter battery and an extra battery. Works like a powerful built-in charger when you’re on the go.
240 £
Exclude 20 % vat

Smartpass 120 (Increases charging 120A when D250SA is installed)

Separates, prioritises & improves batteries and equipment. NB! This device is a slave to the D250SA and does not operate independently.
253 £
Exclude 20 % vat

About Work System


We develop and sell vehicle racking systems for vans and other service vehicles. Most of our solutions are locally produced in the Småland region of Sweden. Småland is not only a well known Swedish holiday destination and setting for Astrid Lindgren's books but also well known for its people's entrepreneurial drive and for being a centre for innovative entrepreneurship. The opportunities to cooperate with suppliers locally contributed largely to our company's success.

In Småland we found everything we needed to successfully start our own business. Our families and friends spent many nights with us working on our ideas and we are eternally grateful for their support. Right now, we have 50 amazing employees who focus all their energies to fill our Work System dream with life and provide our customers with great products and great service.


With its innovative product development and cutting-edge production methods, Work System offers its customers smart racking system solutions for their vehicles at competitive prices.
As our customers' needs differ, we have developed a modular range of racking solutions which can satisfy all types of customer requirements. Our systems belong to the most flexible of its kind in Europe. All shelves are designed in a modular manner which means they can be adapted to your needs. Additionally, Work System solutions can be flexibly extended due their modularity. Thus, you do not have to buy everything at once. Should you for instance need an additional drawer unit in the future this can be easily added to your existing racking system.


Quality matters to us. We listen to our customers' feedback and our racking systems are regularly tested and improved. We use state-of-the-art simulation techniques and send critical parts of our product range to the SP Technical Research Institute of Sweden for crash testing.

The materials we use in production are mostly processed by robots which ensures high precision and lower production costs. All drawers run on ball-bearing rails which mean they can also be operated smoothly when heavily loaded.

We are confident that our products will serve your needs and are happy to offer you a free 36 months guarantee on our whole range of vehicle racking systems (terms and conditions apply).


For most of our customers the most effective use of their van's loading capacity and working time are the two major factors influencing their buying decision. However, many forget the most important factor - safety. Securing all materials and tools safely in your car protects not just you but also others whilst driving your vehicle. Check out our product videos to see what might happen if cargo is not safely secured during a collision.


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