- VoIP & Phone Systems
How to Set Up Quality of Service (QoS) for VoIP
15 Sep, 2025

£32.83 inc. VAT
AI-generated summary
If you’re using a Poly Savi headset and you’ve got a battery that’s suddenly not lasting like it used to, this is a straightforward fix. The key here is compatibility and hassle: HP supplying the battery “with removal tool” usually means fewer headaches than generic swaps, and at ~£27 ex-VAT it’s good value compared to replacing whole headsets or waiting for a tech to sort it. For a UK office with a few Savi users, it’s the kind of low-cost maintenance that keeps people working without downtime.
That said, I wouldn’t buy it if you’re not already on the Savi 7300 specifically. External battery purchases are one of those areas where “it should fit” can turn into messy returns or intermittent performance. Also, if your headset is already showing other wear (charging contacts issues, base problems, or the whole system behaving oddly), a new battery might not be the real fix—worth checking first. Overall: buy it only if you’re confident it’s the right model for your headsets and you just need a like-for-like replacement.
Flexibility
Adds portability and flexibility for your device.

HP
HP Poly Savi - Battery

APC
Schneider OffGrid 730 - Portable power station - LCD, 2 BS1363 outlets, sinewave, 3 USB-A, 2 USB-C, wireless charger - AC 190 - 265 / DC 12 -30 V - 700 Watt - Lithium Ion - 738 Wh - output connectors: 2 - United Kingdom - black, green

JABRA
Jabra Evolve3 75 Battery Pack 1 Set

APC
Schneider OffGrid 330 - Portable power station - LCD, lithium-ion, 2 CEE 7/3 schuko outlets, sinewave, 3 USB-A, 1 USB-C, wireless charger - AC 230 V - 330 Watt - Lithium Ion - 332 Wh - output connectors: 2 - black, green