APC Battery Back Up Surge Protector 350VA - Reliable Home UPS

In this review the APC Battery Back Up Surge Protector, BK350, is evaluated as a compact, no-nonsense UPS for home and small office use. The bottom line: it is best for users who need short, dependable runtime to save work and keep a router or desktop running through brief outages. The reviewer found the unit easy to integrate, provides both battery backup and surge protection on separate outlets, and includes useful power-management software for Windows and replaceable battery support for long-term ownership.

Key Features

• 350VA / 210W backup: Provides enough runtime to finish tasks or gracefully shut down devices during brief outages.
• Six outlets, mixed protection: Three outlets provide UPS battery backup plus surge protection while three provide surge protection only, keeping noncritical gear safe without draining the battery.
• Right-angle plug and 6ft cord: The right-angle 3-prong wall plug and 6' power cord make placement behind furniture or in tight racks easier.
• Replaceable battery: Uses a replaceable battery (RBC2) so the unit can be returned to service without replacing the entire UPS when the battery ages.
• Energy-Star certified: Meets Energy Star program requirements for UPS products, reducing standby power draw and improving efficiency.
• 3-year warranty and protection policy: Includes a 3-year warranty and a connected-equipment policy that provides reimbursement up to $75,000 for covered damage.

Who It's For

The BK350 is aimed at home users, remote workers, and small-business operators who need a compact, reliable uninterruptible power supply for a router, modem and a single PC or peripheral. It is particularly useful where outages are short but frequent enough to interrupt work or network connectivity.

Those who need long runtime for multiple high-wattage devices or who require advanced network management features should look for larger capacity or network-capable models. If near-silent operation is a top priority for a bedroom or recording space, be aware some users note audible noise during operation.

Pros & Cons

Pros

• Reliable short-term backup that keeps a router and desktop running long enough to save work or maintain connectivity.
• Mixed outlets let you balance battery-backed devices versus surge-only devices for sensible power distribution.
• Replaceable battery and Energy-Star certification make it cost-effective and energy efficient over its service life.
• Includes free Windows power-management software to automate safe shutdowns.

Cons

• Runtime is limited by the 350VA rating, so it cannot sustain multiple high-draw devices for long periods.
• Some customers report audible noise under load, which may be noticeable in quiet rooms.

Specifications

Model	BK350 Back-UPS
Capacity	350VA / 210W
Outlets	6 (3 battery backup + surge, 3 surge-only) NEMA 5-15R
Power cord	6' cord with right-angle 3-prong plug (NEMA 5-15P)
Battery	Replaceable (RBC2, sold separately)
Energy certification	Energy-Star certified for UPS products
Warranty & protection	3-year warranty; $75,000 connected-equipment policy

Our Verdict

The APC BK350 is a practical, affordable UPS for users who need dependable short-term backup for a router, modem and a single PC or peripheral. With mixed protected outlets, a replaceable battery option and Energy-Star efficiency, it delivers strong value for home and small-office setups, though those needing extended runtime or silent operation should consider higher-capacity units.

Frequently Asked Questions

Does the BK350 include management software?
The unit includes free Windows power-management software; Mac users can use native Energy Saver settings.

Can the battery be replaced?
Yes, the battery is replaceable and uses APC battery model RBC2, which is sold separately.

What protection does it offer?
It provides surge protection and battery backup on three outlets, surge protection only on three outlets, and includes a connected-equipment policy up to $75,000.