Yuasa NP4.5-6 6V 4.5Ah VRLA Sealed Lead Acid Standby Battery | 3-5 Year Design Life, 4.8mm Spade Terminals
£9.53 (inc VAT: £11.44)
Key features
- Cross-compatible with 15+ OEM references
- Compact 70 x 47 x 105.5mm footprint
- Lightweight at just 0.8kg
Summary
The Yuasa NP4.5-6 is a 6V 4.5Ah valve regulated lead acid (VRLA) battery built to keep alarm panels, emergency lighting packs and small UPS systems running through a mains outage. If you’re replacing a failed backup battery on a service call, this is the part to reach for.
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Specifying the right cross-reference saves you a wasted trip back to the van, and this NP4.5-6 covers a huge range of legacy part numbers, so you can standardise your stock rather than carrying dozens of near-identical batteries. Its 3-5 year design life in standby use also means fewer repeat callouts on the sites you maintain.
It delivers this through sealed VRLA construction, needing no topping up or user maintenance once installed, and 4.8mm male spade terminals that connect straight onto standard wiring looms. The compact case fits the tight enclosures common in alarm and emergency lighting cabinets.
Features
- Direct replacement for NP4-6 - drop it into existing installs without changing wiring or mounting
- Wide cross-compatibility - matches numerous OEM references including Panasonic, Powersonic and GS Portalac parts, cutting down what you need to stock
- Sealed VRLA construction - no topping up or acid handling on site
- 4.8mm male spade terminals - quick, secure connection to standard cable looms
- 3-5 year design life - fewer repeat callouts when used correctly in standby applications
FAQ
Yes, the NP4.5-6 is the direct upgrade for the older NP4-6, sharing the same case size and 4.8mm spade terminals. You can swap it in without altering the mounting or wiring. The NP4.5-6 cross-references against a long list of equivalents, including Panasonic LC-R064R2P and Powersonic PS-640 among others. Check the physical terminal type and dimensions against the unit you’re removing before fitting, since case shape can vary slightly between manufacturers. No, it’s a sealed VRLA battery so there’s no topping up or acid checks required. Periodic voltage testing as part of your normal system service schedule is still good practice on standby power. Yuasa rate it for a 3 to 5 year design life when used correctly in standby (float charge) applications. Actual life on site will depend on ambient temperature and how often it’s called on to discharge. No, the S or G suffix simply indicates the battery was made on a newer production line introduced to meet demand. There’s no change to quality or performance compared with the standard NP4.5-6. The NP4.5-6 has 4.8mm male spade terminals, so you’ll need standard 4.8mm female spade connectors on your loom. Confirm your existing cable terminations match before ordering if you’re replacing a battery in situ.Will the NP4.5-6 fit where an NP4-6 was previously installed?
Can I use this to replace a Panasonic or Powersonic battery instead of a Yuasa?
Does this battery need any ongoing maintenance once fitted?
What service life should I expect from this battery?
I've received a battery marked NP4.5-6S or NP4.5-6G, is that a different product?
What connector do I need to wire this in?
Specifications
| Brand | Yuasa |
|---|---|
| Part Number | NP4.5-6 |
| Voltage | 6V |
| Capacity | 4.5Ah |
| Battery Type | Valve regulated sealed lead acid (VRLA) |
| Design Life | 3-5 years in standby applications |
| Terminal Type | 4.8mm male spade |
| Dimensions | 70mm long x 47mm wide x 105.5mm high (over terminals) |
| Weight | 0.8kg |
| Replaces | NP4-6 |
| Cross Compatible With | Y4-6, NPG4-6, Rocket ES4-6, Enersys NP4-6, Powersonic PS-640, Panasonic LC-R064R2P, Panasonic LCR6V4BP, Panasonic LCR6V4PL, Panasonic LC-R064R2CH, Panasonic LCPB064P, Panasonic LCR064PUL, Fulmen PE06004, B&B BP4.5-6, B&B BP4-6, GS Portalac PE6-4, Ultracell CB4.5-6, Ultracell UL4.5-6, Universal Battery UB645, RB640, Yuyaolitian LTA640 |
