Long MSK300 · Telecom battery 2V 300Ah AGM

Stationary battery Long MSK300 MSK Series 300Ah 2V

The Long MSK300 with AGM technology is a 300 Ah, 2 V backup battery for UPS, alarms, telecoms and emergency lighting. It measures 170 × 150 × 342 mm, the format sought by anyone replacing a 300 Ah battery in UPS, alarm and emergency systems.

• Long float life under permanent charge.
• AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
• Maintenance-free for its whole service life.
• Sealed and gas-free: suitable for cabinets and offices.

Will it fit your current battery tray?

In terms of format, the Long MSK300 measures 170 × 150 × 342 mm (length × width × height) and weighs 21.20 kg. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

What the Long MSK300 is for

Designed for UPS, alarms, telecoms and emergency lighting, the Long MSK300 is sealed, gas-free and suitable for technical cabinets and offices. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 21.20 kg.

The Long MSK300: MSK Series range and AGM technology

The MSK Series is the Long range the MSK300 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle.

AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.

Long: the maker behind the MSK300

Long batteries combine large-scale production with ISO quality standards and a batch-to-batch consistency that has made them the de-facto standard in backup systems and electric mobility. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

Manufacturer's warranty

The Long MSK300 comes with the manufacturer's official warranty against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.

Usage and maintenance tips

Replace all the batteries in the set at once and avoid environments continuously above 25 °C. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators.

Shipping, delivery and returns

Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.