Gel Battery

- further categories

A gel battery is a closed system battery controlled by a safety valve that is activated when overpressure is generated. It does essentially the same thing as the plain acid version, only much more reliably and safely, but at a higher price. It is therefore a special type of battery that lasts much longer than the conventional version, even without care and maintenance. They have a very good storage capacity and do not sulphate as quickly as conventional acid lead batteries. Thanks to the encapsulated layer between the cells, the liquid inside the battery does not leak, even under severe shaking, so they can be inserted in any position, standing or even lying down. Read more...

Change product view Order products by:
Filter products
By availability
On stock (8)
Pre-order (60)
By brand
DataSafe (4)
Emos (18)
Fiamm (23)
Genesis (23)
By price
€ -
68 products in total, page 1: 1 - 25 / 68123

• 1,2Ah nominal capacity; 6 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 0,3kg
• Dimension: 97 x 25 x 56 mm

Gross price (including 27% VAT): 6.33€ (Net price: 4.98€)

• 3Ah nominal capacity; 6 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 0,69kg
• Dimension: 134 x 33 x 67 mm

Gross price (including 27% VAT): 10.81€ (Net price: 8.51€)

• 4Ah nominal capacity; 6 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 0,85kg
• Dimension: 7 x 4,7 x 10,5 cm

Gross price (including 27% VAT): 6.85€ (Net price: 5.39€)

• 7Ah nominal capacity; 6 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 1,35kg
• Dimension: 151 x 33 x 100 mm

Gross price (including 27% VAT): 12.40€ (Net price: 9.76€)

• 10Ah nominal capacity; 6 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 2kg
• Dimension: 151 x 50 x 101 mm

Gross price (including 27% VAT): 16.72€ (Net price: 13.16€)

• 0,8Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 0,35kg
• Dimension: 96 x 25 x 61 mm

Gross price (including 27% VAT): 11.55€ (Net price: 9.10€)

• 12Ah nominal capacity; 6 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 2,15kg
• Dimension: 151 x 50 x 101 mm

Gross price (including 27% VAT): 18.04€ (Net price: 14.21€)

• 1,2Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 0,57kg
• Dimension: 99 x 48 x 56 mm

Gross price (including 27% VAT): 10.42€ (Net price: 8.20€)

• 2,3Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 0,96kg
• Dimension: 178 x 35 x 67 mm

Gross price (including 27% VAT): 13.60€ (Net price: 10.71€)

• 2,9Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 1,21kg
• Dimension: 79 x 56 x 105 mm

Gross price (including 27% VAT): 17.20€ (Net price: 13.54€)

• 3,4Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 1,37kg
• Dimension: 134 x 67 x 67 mm

Gross price (including 27% VAT): 16.46€ (Net price: 12.96€)

• 5Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 1,83kg
• Dimension: 9 x 7 x 10,7 cm

Gross price (including 27% VAT): 16.88€ (Net price: 13.29€)

• 5Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 1,95kg
• Dimension: 90 x 70 x 107 mm
• Recommended to use for UPS constant power applications under 30 minutes

Gross price (including 27% VAT): 21.48€ (Net price: 16.92€)

• 7Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 2,59kg
• Dimension: 151 x 65 x 100 mm

Gross price (including 27% VAT): 21.71€ (Net price: 17.10€)

• 8Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 2,75kg
• Dimension: 151 x 65 x 100 mm
• Recommended to use for UPS constant power applications under 30 minutes

Gross price (including 27% VAT): 23.47€ (Net price: 18.48€)

• 10Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 3,28kg
• Dimension: 151 x 65 x 118 mm

Gross price (including 27% VAT): 34.27€ (Net price: 26.99€)

• 12Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 4,1kg
• Dimension: 151 x 98 x 100 mm

Gross price (including 27% VAT): 35.09€ (Net price: 27.63€)

• 18Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 6,06kg
• Dimension: 181 x 76 x 167 mm

Gross price (including 27% VAT): 51.38€ (Net price: 40.45€)

• 20Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 6,35kg
• Dimension: 181 x 76 x 167 mm
• Recommended to use for UPS constant power applications under 30 minutes

Gross price (including 27% VAT): 51.80€ (Net price: 40.79€)

• 28Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 9,7kg
• Dimension: 166 x 125 x 175 mm
• Recommended to use for UPS constant power applications under 30 minutes

Gross price (including 27% VAT): 86.14€ (Net price: 67.83€)

• 24Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 8,8kg
• Dimension: 166 x 175 x 125 mm

Gross price (including 27% VAT): 77.15€ (Net price: 60.75€)

• 33Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 12,3kg
• Dimension: 197 x 131 x 158 mm

Gross price (including 27% VAT): 100.97€ (Net price: 79.50€)

• 38Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 15,03kg
• Dimension: 197 x 165 x 172 mm

Gross price (including 27% VAT): 120.41€ (Net price: 94.81€)

• 55Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 18,3kg
• Dimension: 229 x 138 x 207 mm

Gross price (including 27% VAT): 175.68€ (Net price: 138.33€)

• 65Ah nominal capacity; 12 volts
• Sealed rechargeable lead-acid battery
• Maintenance free operation
• Weight: 23,63kg
• Dimension: 350 x 166 x 174 mm

Gross price (including 27% VAT): 200.51€ (Net price: 157.88€)
68 products in total, page 1: 1 - 25 / 68123

Such batteries are now also called care-free batteries. These batteries do not need to be refilled with distilled water and are virtually smoke-free. Although their lifespan is still significantly longer than conventional batteries, they can be extended with minimal maintenance using a gel battery charger.

What is a gel battery charger good for?

A gel battery charger will keep your gel batteries running smoothly under everyday use, giving them optimum cycle life and protecting them from discharging. Of course, it may still be necessary to charge even carefree batteries for some reason. For example, because of lights left on, or if other loads are overused while the vehicle is stationary. However, you can only restore your gel battery to working condition with a special automatic charger. These smart chargers start with a relatively fast charge and then switch to trickle charging after a certain charge level to achieve greater efficiency.

Gel batteries are used to power more serious equipment, so the equipment used to charge them also has more sophisticated electronics and special safety features. Because the electrolyte layer in this type is not a liquid but a gel, it must be disconnected from the mains during charging once the battery reaches its maximum charge level. Otherwise, the gel layer may suffer serious damage, with increased bubble formation. This will damage the cells, resulting in a loss of capacity. In addition, overpressure may occur which cannot escape through the cover. In this case, the enclosure will slowly curl up, in extreme cases the enclosure will simply drop the lid. An automatic gel battery charger solves these problems for you, disconnecting the battery from the mains at maximum charge.

What to look out for when choosing a gel battery?

Most gel battery chargers have advanced charging technology. Fully automatic models have advanced safety features such as output short circuit, polarity and overheat protection. Make sure that these conditions are met by the gel battery charger you choose. If you are looking for a charger for an existing battery, make sure that the maximum charging current does not exceed 10 percent of the battery capacity. Or you can choose a Dometic brand charger, which can charge up to three batteries at the same time. This saves time and money. But it's also worth mentioning the temperature monitoring function these innovative chargers have. Remember, temperature has a big impact on battery capacity.

What types of batteries can you use the gel battery charger for?

The gel battery charger can be used to charge lead-acid, AGM and gel batteries.

What capacity batteries can be charged with the gel battery charger?

Gel battery chargers are a convenient and reliable way to charge the batteries in your vehicle. Whether it's an electric bike, motorbike, car, boat or even a small airplane, DND Telecom's online shop offers you a gentle DC charging solution for 12V and 24V batteries. For some chargers we also offer 6-stage IU0U charging technology.

What is the charging speed of the gel battery charger?

Choosing the right gel battery charger is very important to ensure optimal battery performance and battery life. This is because the charging speed has an impact on battery performance. However, the charging speed depends on the capacity of the battery and the performance of the gel battery charger selected. So, a charger with a higher capacity will charge the battery faster, but charging too fast can destroy the battery. Therefore, always make sure that the charging speed is always optimal for the battery. Whether you're doing a cyclic or constant charge, there's a golden rule to follow.

A charging current of 10 per cent of the battery's capacity is ideal. But you also need to pay attention to the temperature coefficient, which is -3mV/Celsius/cell for a 12V battery. But if you're already paying attention to the condition of your battery, it's also worth taking the time to fully charge it at least once a month. This will maximise its lifespan. If you don't keep an eye on your battery, it's very easy for sulphation to set in, which can lead to battery ageing.

Is there overcharge protection in the gel battery charger?

Yes, there is overcharge protection in the gel battery charger. An LED indicator shows the charging status and when the charger has completed its task, i.e. the battery is charged, it will automatically stop. But modern gel battery chargers also have reverse polarity protection and short circuit protection. But you can also choose a modern charger with a sleep mode. In this case, the charger charges the battery silently. This feature is ideal at night or in underground car parks or parking areas where others might be disturbed by the sound.

What output connectors does the gel battery charger have?

The DND Telecom webshop offers gel battery chargers from two brands. The Dometic brand chargers have standard connectors, but the Alfatronic type chargers have what are called "Click 'n' fit" mounting clip connectors with a three-hole mount that can be mounted separately. This makes these lightweight and compact chargers easy to fit even on uneven surfaces.


DND offers a wide range of gel battery chargers, as well as a selection of recommended gel batteries. Our Dometic products come with a 2-year warranty, depending on the type, and we also offer installation and maintenance assistance as an extra service.