Xiaomi Smart Band 8 Pro: problems, parts and running costs

Checked: 2026-10-19

Summary

The most consistent owner complaints are heart-rate readings that run about 5 BPM below a chest strap during workouts and GPS tracks that break down in built-up areas, plus real-world battery life well under the 14-day claim when all features are enabled [3][4][5]. There are no required consumables or subscriptions, so yearly running cost is effectively $0 apart from optional replacement straps. It is a good buy at or under the EU street price of about €80 (TechAdvisor, March 2024); above that, newer Xiaomi models and rival bands are the better choice.

Common problems and fixes

Battery life far below the 14-day claim — the claim requires disabling high-precision sleep, in-sleep breathing and stress monitoring; real-world use lands at 5-10 days, and one owner reports the band lasting 2 days and losing 5% in half an hour. Workaround: turn off always-on display and unused health monitoring; treat severe drain as a unit-level issue. [1][2][3][4][5][11]
No physical button — navigation is touchscreen-only, described as a nuisance deep in menus and for ending workouts; the UI also stutters under heavy input. [2][4][5]
Unreliable advanced metrics — recovery suggestions of 80-100 hours and VO2 max well below other wearables; owners describe them as nonsensical. Ignore them. [5]
Sleep tracking gaps — no awake-time recording, which Wareable flags as a red flag for sleep-stage accuracy; false nap detection during a haircut; trouble telling lying down from sleeping. [2][3][5]
Lag after about a year of use — one owner reports the band lagging after less than a year of usage. [12]

Parts and consumables

Sealed 289 mAh battery — not user-replaceable and no official spare-parts catalog exists, so end of life means replacing the band. [1][8]

Yearly running cost

$0 in required consumables: no subscription is required, and the only extras are replacement straps, whose cost the sources do not publish [3][12][13]. Charging electricity is not quantified in the sources.

When it is a good buy

At or under the EU street price — £59.99/€79.99 in the UK and EU (TechAdvisor, March 2024) and a 70 euro RRP in the EU (Notebookcheck) — strong value for a bright AMOLED display, built-in GPS and 5ATM water resistance in a budget band. [2][4]
Xiaomi no longer sells the band directly in the US; TechAdvisor’s 2026 guide says it can be picked up with quite a significant discount elsewhere through third-party retailers, so only buy at a clear discount. [2][13]