68W Peel and Stick Flexible Solar Charging Kits - narrowboats, motorhomes

220W (110W+110W) ETFE Lightweight Smart Battery-Battery Solar Charging Kit - for smart alternators on motorhomes, caravans, campers (CTEK D250SA)


This premium 2 x 110W (220W) ETFE smart flexible solar charging kit (with back-contact solar cells) is ideal for smart-charge alternators on motorhomes and caravans. The smart battery-to-battery charger in this kit is able to maintain a constant voltage from the smart alternator to charge an auxiliary/leisure battery safely.




This kit contains:

    2 x 110W ETFE Monocrystalline Solar Panel with back-contact solar cells - with white backing sheet

    20A CTEK D250SA MPPT Smart Battery-Battery Charger - with sensitive charging voltages

    Pair of 3m solar cables with MC4 connectors

    Pair of 4mm2 T-Branch solar cable connectors with MC4 connectors - parallel


This new solar panel kit is specifically for vehicles with smart alternators that cannot use a traditional split charge system (voltage sensitive relay). The award-winning Swedish technology CTEK D250SA MPPT Smart Battery-Battery Charger in this kit uses  and takes the highly variable voltage output from a smart alternator and boosts or reduces it to maintain a stable voltage output for your secondary battery. The charger has MPPT solar input for the panels, and connections to both your engine and leisure battery. It is a fully automatic, 5 step charger that supplies up to 20A of power to charge, condition and maintain any 12V lead acid service battery from 40-300Ah.

We have provided a pair of 3m solar cables with MC4 connectors, as the panels will be more efficient in series connection and this extension solar cable will take you to the terminal inputs on the smart charger. If you also need bespoke lengths of battery cables with fuses, to connect to your engine and auxillary battery, please contact us directly as lengths may vary and change the required cable thickness.

Solar panel specifications:

  • Rated power: 110W
  • Voltage Voc: 21.9V
  • Current Isc: 6.32A
  • Dimensions: 540 x 1070 x 3 mm
  • Weight: 2.18kg

Smart MPPT Charger specifications:

  • Input PV: <23V
  • Max Output Voltage: 14.4V
  • Max 20A
  • Sleep mode current: 1Ah/month
  • Maximum Power Point Tracking (MPPT): Yes
  • Temperature Compensation: 25°c ± 23mV°C
  • Operating Temperature: -20°C to +50°C
  • Dimensions: 192 x 110 x 65 mm
  • Weight: 0.7kg
  • Insulation class: IP65 (splash and dust proof)
   MAX solar panel input 300W and <23V, suitable for 12V engine battery and 12V leisure battery banks only!

Please get in touch for more information.


Who are you buying from?

Midsummer Energy is a small UK business specialising in renewable energy systems. We provide a VAT receipt with every order.

Always happy to help. We pride ourselves on our helpful service and are always happy to take the time to help customers get the best products for their needs. Please ring us before buying if you have any questions.

Payment can be made by Paypal, or we can take debit or credit card payments by telephone or by sending you a link by email. UK bank transfers are also welcome - please contact us for our payment details.

Delivery usually takes around a week, but can be slightly longer in busy periods. If your order is urgent please ring us before ordering - we may be able to arrange an express delivery.

Returns. You are welcome to return any unwanted product within two weeks of ordering, provided it is still in as-new condition and in its original packaging. You are responsible for the cost of delivery back to us. Where an item is damaged or faulty on delivery you should notify us immediately by telephone or email. We will arrange for the goods to be collected. Once we have received and inspected them we will then, at our discretion, replace or repair the item or refund you the value of the item.