Yuasa SWL+2800-6 Industrial VRLA battery - 6V / 184Ah (High Rate Monoblock)

The Yuasa SWL+2800-6 is an extremely powerful 6-volt monobloc from the High-Performance SWL+ series. In contrast to the widespread 12V batteries, this special block is used in large UPS systems where the highest capacities (184 Ah) and excellent thermal stability are required.

The designation "2800" stands for the impressive performance output in watts per block. Due to the 6V architecture (only 3 massive cells instead of 6 smaller ones), this battery offers significantly higher resistance against thermal runaway and is therefore a robust alternative to 12V strings in critical large installations.

Highlights at a glance

• Massive 6V capacity (184 Ah): With 184 Ah (with C10) this block offers an enormous energy reserve. The 6V design allows the use of thicker lead plates, which increases cycle stability and lifespan compared to 12V solutions of equal capacity.
• SWL+ High Rate Power (2800 Watt): The SWL+ Series is optimised for high-current discharge. This block delivers extremely high currents for brief periods (high rate discharge), immediately intercepting voltage dips during mains failure – ideal for modern data centres.
• Robust 3-cell technology: Fewer cells mean fewer internal connectors and lower internal resistance. Heat dissipation is more efficient with 6V blocks, which significantly increases operational safety with high load currents.
• Eurobat "Very Long Life": Classified for a service life of 12+ years (design life often up to 15 years). Thanks to the special lead-calcium-tin alloy of the SWL+ series, grid corrosion is minimised.
• Maintenance-free & flexible: Thanks to AGM technology (Absorbent Glass Mat) the electrolyte is bound. The battery is leak-proof, low-gassing (recombination >99%) and can be installed standing or lying down.

Areas of application

The use of 6V blocks is typical for the high-performance sector:

• Large UPS systems: Where 12V blocks reach their thermal limits.
• Telecommunications: Central battery installations in switching centres.
• Emergency lighting: Security power supply in accordance with EN 50171.
• Energy storage: In industrial DC networks.

Installation & safety instructions

• Attention weight: At approx. 35 kg this 6V block is extremely heavy. Installation on shelves must be planned carefully (consider floor load).
• Connection: Due to the high currents M8 bolts are used. The tightening torque is approx. 6 Nm. Always use insulated tools.
• Series connection: 6V blocks are connected in series to achieve high system voltages (e.g. 400V). Never mix 6V and 12V blocks in one string!
• Charging voltage: The float charging voltage is 2.275 V/cell (±1%). For the 6V block this means 6.825 Volt total voltage.

Features

FAQs about the Yuasa SWL+2800-6

Why use 6V blocks instead of 12V?

With very large batteries (over 100 Ah), 12V blocks often become unmanageable and more thermally susceptible. 6V blocks provide the "sweet spot": they are more robust than 12V blocks, but easier to install than many individual 2V cells. They provide higher operational safety in large strings.

What does the "2800" mean?

The number refers to the performance in watts that the block can deliver during a short-term discharge (typically 10 minutes). For UPS engineers, this value is often more important than pure capacity (184 Ah) because it defines the maximum load the UPS can support.

Is the thread M6 or M8?

In this performance class (over 150 Ah), Yuasa almost always uses M8 internal thread to safely transfer the high currents and minimise connector resistance. M6 would be too weak here.