Yuasa SWL+800 Industrial VRLA battery - 12V / 25Ah (High Performance)

The Yuasa SWL+800 is a compact high-performance monobloc from the premium SWL+ Series. With a nominal capacity of 25 Ah (often up to 28 Ah at C20 depending on specification), this 12V battery offers exceptional power density in a very common form factor.

It is the technical upgrade to standard 24Ah class batteries (such as the NPL24-12) and has been specially developed for applications where high discharge currents are required in a small space. Thanks to the Eurobat "Very Long Life" classification, it is ideal for critical UPS systems where reliability and long replacement intervals are crucial.

Highlights at a glance

• Power upgrade (800 watts): The designation "800" stands for the increased power output (watts per block during short-term discharge). Compared to standard 24Ah batteries, the SWL+800 delivers significantly more energy to ensure short bridging times at high loads.
• Eurobat "Very Long Life": Classified for a service life of 12+ years (design life up to 15 years). This clearly sets it apart from standard batteries (often 5 or 10 years) and reduces the long-term operating costs (TCO).
• Compact power (25 Ah): Offers maximum capacity in a standard housing size (approx. 166 x 175 x 125 mm). It often fits, without conversion, into existing UPS cabinets or battery cassettes and increases their runtime.
• HT Element X technology: The advanced grid alloy reduces internal corrosion and self-discharge. This ensures high reliability even in "standby" operation over many years.
• Maintenance-free AGM technology: VRLA design (valve regulated) with electrolyte bound in glass fibre. The battery is leak-proof, vibration-resistant and can be operated in any position (except permanently upside down).
• Robust housing: Made from impact-resistant ABS plastic (optionally also available as FR version with flame-retardant UL94 V-0 housing).

Areas of application

The SWL+800 is ideal for compact but powerful systems:

• UPS systems (UPS): Especially in rack-mount systems or external battery modules (EBM).
• Emergency lighting: Central battery systems.
• Telecommunication: Smaller distribution stations.
• Medical technology: Buffering of critical devices.
• Safety technology: Alarm systems with high power requirements.

Assembly & operating instructions

• Connection: The battery usually features M5 internal thread. The recommended tightening torque is 2.5 Nm. Use a suitable tool to avoid damaging the thread.
• Installation position: Thanks to VRLA technology, operation standing or lying on the side is possible.
• Charging voltage: Trickle charge at 2.275 V/cell (±1%) at 20°C. This corresponds to 13.65 V for the block.
• Storage: If stored without charging, a recharge should occur after 6 months at the latest (at 20°C) to prevent sulphation.

Features

FAQs for Yuasa SWL+800

Can I use the SWL+800 as a replacement for an NPL24-12?

Yes, absolutely. The dimensions are identical or almost identical. However, with the SWL+800 you get a significant upgrade: More high-current performance (important for UPS) and a longer service life (12+ years instead of 10 years). Just check that your charger matches the capacity (which is usually the case).

What does the number "800" mean?

The number refers to the power in watts per block (typically at 10 min. discharge). It characterises the battery as a high-current type that can supply far more energy for a short time than a standard 25Ah battery.

Is the thread M5 or M6?