70mai A800SE: problems, parts and running costs

Checked: 2026-10-20

Summary

Owners most often report memory-card trouble: recordings that drop a few seconds and cards that die within days to weeks, which 70mai support ties to the card rather than the camera. Budget for a replacement microSD card each year plus an optional hardwire or OBD-II parking kit. At $99.99 for the front unit (70mai US store, 2026-10-20) it is a good buy for a 4K front camera with HDR, GPS and ADAS.

Common problems and fixes

Dropped frames in recordings — an owner on firmware 1.138.ww with a SanDisk Extreme Pro card sees recordings skip a few seconds; 70mai support says the card cannot be written to and advises a slow full reformat on a computer (reported 3-4 hours) or replacing it with a 70mai or Lexar card. Warranty terms are unverified. [3]
Parking mode enters inconsistently with the OBD-II kit — sometimes within 1-2 minutes of locking, sometimes still in driving mode after 20 minutes; opening the 70mai app in the car seems to trigger it. [4]
Blurry footage and unreadable plates — one owner calls the footage blurry and says plates cannot be read; a community answer points to Sony Starvis cameras such as the Viofo A229 Plus. [5]
Night video weaker than day — an owner who praised daytime 4K says night video is weaker and that “super night vision” oversells what is visible. [2]
ADAS lane-departure warning unverified on highways — an owner who bought the A800SE for ADAS is still asking how well it works and whether it false-alarms during overtakes; no answer was found. [8]

Parts and consumables

RC22 rear camera (optional 1080p unit) — 38,630–57,630 KRW on 11st and 46,400 KRW on AliExpress (2026-10-20); sold in the front-plus-rear bundle. [11]
CPL filter (A800SE-compatible) — 26,100 KRW (2026-10-20). [11]
Hardwire or OBD-II parking kit — needed for 24-hour parking mode; an owner lists an UP06 hardwire kit. [4][10]
128 GB memory card — reported included in the box by one owner. [2]

Yearly running cost

Not enough data for a yearly figure. [3][6][11]

When it is a good buy

At $99.99 for the front unit (70mai US store, 2026-10-20) the A800SE is the value tier for a 4K front camera with HDR, GPS, ADAS and Wi-Fi 6. [1]
At $139.99 (70mai US store, 2026-10-20) the front-plus-rear bundle adds the RC22 dual-channel capability for roughly $40. [1][11]
Korean listings put the A800SE around $66-83 (11st, 2026-10-20); the same storage and app caveats apply at that price. [11]
Above roughly $150 the comparison set changes: the A810S is the same physical size as the A800SE and a different model, so check whether the extra money buys a newer sensor generation, 4G cloud connectivity or better parking-mode behaviour. [10]
Alternatives: the A810 Lite at $149 suits buyers who want 4G-oriented features, and the Viofo A229 Plus is the community answer for plate readability. [9][5]