4Ah 12V Sealed Lead Acid Emergency Lighting Battery — F1 Faston - 4.75mm (Yuasa Y4-12)
Product overview
The Yuasa Y4-12 is a 12V 4Ah sealed lead acid (SLA) emergency lighting battery in the SLA Monobloc format. It is intended for replacement work where the original battery reference, electrical rating and terminal arrangement match.
Identification and specification
Identify this battery by the Yuasa reference Y4-12. Its canonical specification is 12V, 4Ah, sealed lead acid (SLA) technology and F1 Faston - 4.75mm terminals. Confirm the reference and terminal type against the battery being removed before ordering.
Emergency lighting replacement batteries
BatteryVault specialises in replacement batteries for emergency-lighting equipment and supplies batteries across multiple manufacturers and technologies. If the original reference is not clear, match the available printed details and terminal arrangement before selecting a battery.
Trade and electrical wholesaler supply
Electrical wholesalers, contractors and maintenance teams can use BatteryVault for individual batteries, bulk requirements and project supply, with nationwide UK delivery. For unusual or obsolete batteries, send a photograph with any visible details to help confirm the required specification.
| Manufacturer Part Number | Y4-12 |
|---|---|
| Battery Chemistry | Sealed Lead Acid (SLA / VRLA) |
| Battery Voltage | 12V |
| Configuration | SLA Monobloc |
| Connector Type | F1 Faston - 4.75mm |
| Brand | Yuasa |
| Battery Capacity (Ah) | 4Ah |