eufy Security SoloCam S340: problems, parts and running costs

Checked: 2026-10-17

Summary

The problem owners report most is the solar panel: eufy’s own community forum and Reddit carry reports of panels delivering no charge despite adequate sunlight, some failing after about a year, and eufy’s documentation states the battery stops recharging below 32°F. Running costs stay low — standalone use on the built-in 8 GB storage needs no subscription, and the likely spare part is a replacement solar panel at about $29.99 from eufy. It is a strong buy at $120-160, competitive at the $199.99 MSRP, and weak value above $200.

Common problems and fixes

Solar panel stops charging — the most common complaint; community and Reddit threads describe the panel showing 0 mAh despite adequate sunlight, with some panels failing after about a year. Reported causes are firmware bugs, faulty panels, bad extension cables, pollen and dirt buildup, and cold weather; one owner measured 0.556 W from a panel mounted directly on the camera versus 1.615 W through the extension cable, so cleaning the panel and mounting it on the extension cable at the right angle is the first fix. eufy sells a replacement panel for about $29.99. [6][7]
Charging stops in cold weather — eufy’s documentation states the camera fails to recharge below 32°F (0°C) and discharges quickly below 37.4°F (3°C), and owners confirm cameras going dark through winter and resuming when temperatures rise. There is no fix; where winters spend weeks below freezing, plan on bringing the camera inside and charging it over USB-C. [7]
Battery drains despite the panel — one owner reported 79% battery after 31 days with the solar panel attached, and another saw the battery fall from 100% to 13% in 6 days despite solar. eufy claims up to 3 months per charge, and a 30-month owner gets about 2 months in deep shade, so treat the panel as weather-dependent and check the battery trend in the app after installation. [8][9][10]

Parts and consumables

Solar panel — removable 2.2 W panel with a 10 ft USB-C extension cable; eufy sells replacements for about $29.99 (October 2026), and multiple owners report the included panel failing after about one year, which is the realistic replacement cycle. [1][6]
Battery — built-in, non-removable lithium-ion, so it is not a user part; eufy claims up to 3 months per charge, a full charge takes about 8 hours, and no user-replaceable battery is sold for this model in the sources read. [1][13]

Yearly running cost

There is no subscription for standalone use: clips record to the built-in 8 GB storage and human and vehicle detection runs on device, so the required software cost is nothing. The realistic spending risk is hardware: the solar panel is the part owners actually replace, eufy’s price for one is about $29.99, and the failure pattern some owners describe is about one year — an owner budgeting one replacement panel a year is planning roughly $30 a year, which is scenario arithmetic from the $29.99 price, not a published failure rate. The battery is not user-replaceable, so there is no battery line item. Electricity for an occasional 8-hour USB-C charge is small and no owner has published a yearly figure, so there is no defensible annual dollar total beyond the panel risk. [1][6][9]

When it is a good buy

At $120-160: strong value for a dual-lens outdoor camera with solar, local storage and no subscription. [2][4]
At the $199.99 MSRP: competitive rather than compelling; the lack of HomeKit, Matter and 5 GHz Wi-Fi is harder to excuse at that price. [1]
Above $200: weak value unless the dual-lens solar combination is specifically required. [2]

An owner who ran one for 30 months reports no hardware failures with the solar panel keeping the battery charged, which is the case for buying it discounted rather than at MSRP. [2][8][11]