Long WXL12550WN WXL Series · Stationary UPS battery 140Ah AGM
Specifications
| Brand | LONG |
|---|---|
| Part number | WXL12550WN |
| Voltage (V) | 12 |
| Capacity (C20) | 140Ah (c20) |
| Technology | AGM |
| Length | 338 mm |
| Width | 173 mm |
| Height | 281 mm |
| Weight | 45.00 Kgs |
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Long WXL12550WN 12V 140Ah is a stationary battery for backup power systems: UPS, alarms, telecom and emergency lighting. Long float-life under permanent charge and instant response to mains outages with no noticeable voltage drop.
Why this stationary battery?
- Instant responsewhen the mains drop, no voltage dip
- Long life under 24/7 chargeoptimised for permanent service
- Compatible with your systemexisting UPS units and alarm control panels
Where it fits: the Long WXL12550WN is one of our batteries for ups / ups, belongs to our Long batteries and by capacity it sits among our 140Ah batteries.

Stationary battery Long WXL12550WN WXL Series 140Ah 12V
Designed for UPS, alarms, telecoms and emergency lighting, the Long WXL12550WN from the WXL Series range offers 140 Ah with AGM technology on permanent float charge. It measures 338 × 173 × 281 mm, the format sought by anyone replacing a 140 Ah battery in UPS, alarm and emergency systems.
- Maintenance-free for its whole service life.
- Sealed and gas-free: suitable for cabinets and offices.
- Long float life under permanent charge.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
What the Long WXL12550WN is for
The Long WXL12550WN is designed for UPS, alarms, telecoms and emergency lighting: it sits on float charge and responds instantly to a mains failure. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 45 kg.
Size, terminals and hold-down of the Long WXL12550WN
The Long WXL12550WN is made in the 338 × 173 × 281 mm format and weighs 45 kg. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
Long: the maker behind the WXL12550WN
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. We guarantee that every Long arrives new, charged and with the manufacturer's full warranty.
The Long WXL12550WN: WXL Series range and AGM technology
The WXL Series is the Long range the WXL12550WN 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 (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery.
How to make it last longer
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.
Manufacturer's warranty
The Long WXL12550WN 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.
When you get it and how to return it
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
Other 140Ah batteries: We stock 26 models of 140 Ah to compare by price, technology and cold cranking: see all 140Ah batteries.
Recommended accessories
Frequently asked questions
Is this battery AGM? What is it for?
Yes: the WXL12550WN from Long uses AGM (Absorbent Glass Mat) technology, a sealed lead-acid battery whose electrolyte soaks a glass-fibre mat. Its advantages: more charge/discharge cycles than a conventional battery and better heat tolerance.
What are the dimensions of the Long WXL12550WN battery?
Check the room available in your device, because a single millimetre too much can stop the clamp from closing. Its dimensions are 338×173×281 mm, also written 338x173x281 mm; the height already includes the terminals.
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