You might also be interested in these apc back ups pro external battery pack.
APC Back UPS - BX2200MI - UPS 2200VA Battery Backup & Surge Protector, Backup Battery With AVR, Dataline Protection, 2200 VA / 1200 W
APC
£ 199.47
To the product (16 offers)
Apc Back-ups Pro External Battery Pack (for 1500va Back-ups Pro Models)
APC
£ 449.49
free shipping
To the product (1 offer)
APC Easy UPS 900VA - BVX900LI - UPS Battery Backup & Surge Protector, Backup Battery with AVR, LED Indicators, Uninterruptible Power Supply
APC
£ 79.73
To the product (13 offers)
APC by Schneider Electric Back UPS Pro - BR1300MI - UPS 1300VA (8 IEC Outlets, LCD Interface, 1GB Dataline Protection)
APC
£ 290.82
free shipping
To the product (11 offers)
APC Back-UPS Pro 900 - UPS - 540 Watt - 900 VA
BR900G-GR
£ 212.57
free shipping
To the product (7 offers)
APC by Schneider Electric Back-UPS CS - BK650EI - Uninterruptible Power Supply 650VA (4 Outlets IEC, Surge protected)
APC
£ 98.75
free shipping
To the product (17 offers)
APC UPS for Home, 500VA UPS Battery Backup with AVR, 8x British BS1363A outlets (1) USB Charger Port, Back-UPS Uninterruptible Power Supply BE500G2-GR
APC
£ 66.42
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APC by Schneider Electric Power-Saving Back-UPS PRO - BR900GI - Uninterruptible Power Supply 900VA (AVR, 8 Outlets IEC-C13, USB, Shutdown Software)
The APC Back-UPS PRO Series offers guaranteed battery backup and surge protection for high performance computer systems, networks, external storage devices, game consoles and other electronics
