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Batteries & Power Supplies

Batteries store energy for devices away from the mains or for standby when it fails, and power supplies convert mains into the voltage equipment needs. This umbrella collection includes Eaton UPS units, Duracell and GP batteries including alkaline and lithium cells, Yuasa sealed lead-acid standby batteries, Ajax replacement batteries, rack PDUs, boxed and DIN-rail PSUs, battery chargers, and Mercury step-down voltage converters.

Choosing Batteries & Power Supplies

Find the right family of power product here, then narrow to the cell, supply or UPS.

Consumer cells

Duracell and GP alkaline batteries cover AA, AAA, C, D and 9V (PP3) sizes, and lithium cells include CR123 and CR2 cells, GP AA and PP3 lithium batteries, and coin cells such as the CR2032 and CR1620 for cameras and remotes.

Standby batteries

Sealed lead-acid VRLA (AGM) batteries back up alarm panels, fire panels and power supplies during a mains failure, and the Yuasa batteries here run from the NP2.1-12 at 12V 2.1Ah to the Y17-12 at 12V 17Ah.

Uninterruptible power

Eaton UPS units, including the compact 3SM36 mini UPS, the 5PX range and 9PX units, keep network equipment, recorders and servers running through power cuts and give time for a controlled shutdown. The 9PX2200IRTNBS and 9PX3000IRTBPH fit a rack or stand as a tower.

NeedProduct typeExample
Remote or camera cellAlkaline or lithiumDuracell CR123, GP 9V (PP3)
Alarm panel standby12V VRLA batteryYuasa NP12-12
Rack or recorder backupUPSEaton 5PX1500IRTNG2BS
Rack power outletsPDUAdastra 776.490UK
Low-voltage DCBoxed or DIN-rail PSUHAY-PSU12V5ABBL

Supplies, chargers and converters

Boxed and DIN-rail power supplies from Haydon, Dantech, Elmdene and AMG Systems power security and network equipment. Chargers include the Mercury 690.004UK for 2V, 6V and 12V lead acid batteries and Hikvision DS-MDS001 dock stations that charge body-worn cameras. The Mercury 651.001UK and 651.004UK step-down converters run 110V equipment from UK mains, and the 651.031UK runs 120V equipment. Adastra and All-Rack PDUs distribute power in a 19" rack.

Brands we stock in Batteries & Power Supplies

Acre, Adastra, Advanced, Ajax, All-Rack, Altronix, AMG Systems, APC, Aritech, Axis Communications, Bosch, Bose Professional, BTicino by Legrand, Bull, C-TEC, CDVI, Chord, Comelit PAC, Comnet, Connectix Cabling Systems, CQR, Dahua Technology, Dantech Electronic Engineering, DMP, Duracell, Dynamic, Eaton, Elmdene, EMS, Energizer, EZVIZ, GJD, GP, Hanwha Vision, Haydon, Hikvision, Hochiki, Honeywell Commercial Security, Hoyles, JCI Visonic, Kentec Electronics, Knightsbridge, Luminite, LYYT, Mercury, Nitek, NVT Phybridge, Optex, Opus Technologies, Pyronix, Raytec, RGL Electronics, Riello UPS, Ruijie, Scope, Signet, STP, Teledyne FLIR, Texecom, TOA, TRENDnet, Ubiquiti, Uniti Power, Veracity, Verint, Videofied, Videx, Xtralis by Honeywell and Yuasa.

Eaton supplies the most products.

Related categories

For DC-to-AC conversion see power inverters, for stepping voltage transformers and voltage regulation, and for camera power CCTV installation accessories.

Frequently asked questions

How does a battery backup power supply work?

A battery backup power supply runs equipment from the mains and keeps a standby battery charged at the same time. If the mains fails, it switches to the battery automatically, so devices such as alarm panels, door locks or cameras keep working. Choose a battery capacity that covers the standby time the system needs. The range here includes boxed power supplies with battery backup.

What battery does a standby power supply use?

Standby power supplies for alarm, fire and access systems usually take a 12V sealed lead-acid battery, often called VRLA or AGM. Check the space inside the enclosure and the supply's charging output, then choose a capacity in amp-hours that covers the backup period you need. A bigger battery lasts longer but needs more room. The range here includes Yuasa sealed lead-acid batteries.

What is the difference between a power supply and a battery charger?

A power supply converts mains into a steady voltage to run equipment directly, while a battery charger controls the current fed into a battery to recharge it safely. Some standby power supplies combine the two jobs, running the load and charging a backup battery. Check that a charger suits the battery type and voltage. The range here includes battery chargers and power supplies.

  • Established 1975
  • Birmingham trade counter
  • UK-only supply

Written by the West Midlands Electrics technical team

Updated

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