Charging troubleshooting

eufy Camera Not Charging: Three Causes, and Which One You Can Fix

A camera that won't charge is almost always one of three things, and only two of them are broken. First: it's below freezing where you live — nothing failed, and the cold-weather charging stop shows up in owner reports across every winter, year after year, in every direction you aim the panel — nothing to repair, only a workaround. Second: the charge never actually started — a solar connector seated a millimeter short, or a cable-and-adapter pair too weak to wake a fully drained battery — fixable in minutes. Third: the battery itself has failed, which looks like a charging problem but isn't; the camera shows a healthy percentage, refuses the charger, and dies. That one has a real repair (the packs are plug-in parts) and a cheap workaround. Sorting which case you have is the whole job, and the tells are specific.

Start with the connector and the light

Push the solar panel's connector in harder than feels safe. Owners who spent weeks chasing a ghost found the small proprietary plug was not fully seated — the panel reports, the camera never charges, and no amount of repositioning changes anything. One S340 owner in a six-camera setup listed this as cause number one of winter charging failures, ahead of panel size and orientation.

Then look at the light, not the app. A drained camera that has genuinely started pulling current shows a solid blue light. An intermittent, flashing blue light while the app claims "charging" is a fake charge — one eufyCam 2 Pro owner reported a unit that flashed all night and reported exactly 5% in the morning, the same 5% it had before. Treat flashing plus a flat percentage as "no current is arriving," and move to the cable, the adapter (a 5V/2A brick and a data-capable cable, not a laptop USB port), and the port itself before blaming the camera.

Cold weather is the cause that burns the most time

Here is the cause that burns the most time, because the camera itself is fine.

Owner reports from North American winters in 2025–26 line up on one pattern: the S340 stops accepting charge once air temperature drops to roughly 30–32°F — while continuing to record beautifully. One owner tracked it precisely: the unit worked down to −10°F, but would not take charge even in full winter sun, and only resumed above about 30°F. Another measured 2–3% charge from four to five hours of direct sunlight when daytime highs sat in the mid-30s. Both had cameras on solar panels that worked flawlessly in spring, summer, and fall. Whether this is deliberate battery protection or a side effect nobody has answered — support treats the behavior as not a flaw — but it recurs identically across households, models, and mounting directions.

The owners who live with this now recharge manually every January and February — take the camera down, charge it indoors over USB, and count on roughly three weeks per full charge in deep winter. Adding panel capacity does not help: a second panel on a Y-splitter, a larger "solar plus" panel, re-aiming from northeast to northwest — none of it defeated the cold in these reports. It is the temperature, not the watts, that decides. And one owner noted the irony that a smaller, removable camera he owned, whose battery he could simply bring inside, outlasted the S340 through the cold spell.

If you are buying for a climate with real winters, this should reframe the decision: a solar camera you can physically take down wins over a solar camera you can't, January through February.

When the battery itself has failed

If the checks above pass and the camera still won't take a charge, you are probably looking at a failed pack, and the signature is consistent across reports: the camera stops at what the app records as a healthy charge — one failure logged at 80% capacity — the red charging LED stays dark, no sync-button sequence wakes it, and the unit is a paperweight with good battery history right up to the death.

The trigger in multiple independent reports is innocuous: taking the camera down for a routine recharge at the HomeBase and never getting it alive again. This exact sequence killed both an eufyCam E and an eufyCam 2 Pro within weeks of each other for one owner, and a third owner lost a 2 under two years old the same way. A SoloCam E20 paired with a solar kit — the setup that's supposed to eliminate battery cycling — died nine months past warranty on a roughly £80 device.

The repair is real: these cameras use plug-in battery packs. Open the housing, unplug the pack, fit a replacement, close it up. An owner who swapped a pack in a dead eufyCam 2 got another year out of it, and replacement packs are commodity parts — the camera is the expensive part, not the cell. If the warranty clock has run out, budget for the pack and the twenty minutes rather than the discount voucher.

The 80% charging argument

Whether you should ever charge these things to 100% is genuinely contested among long-term owners, and the disagreement decides which of the failure stories above you end up living.

One camp runs cameras on constant power — a dead battery plus a 9-meter USB cable turns a wireless camera into a wired one, and it lives again. The other camp calls that a delayed funeral: a lithium pack held at full charge indefinitely develops solidifying electrolyte, swells, and destroys the internals it sits against. Their prevention rule is to cut every charge at 80% and never store at full charge. Their evidence is real — same models that others report dead in 18 months, still working normally at two, three, four-plus years in households that charge to 80% and no higher. Some want firmware to enforce it: stop the actual charge at 80%, report 100% to the user, spare everyone the decision.

Nobody can settle this from a spec sheet. But if you're keeping a battery camera past year two, the 80% habit costs nothing, and the failure evidence on the charge-to-100%-forever side is thick.

Fast drain is not the same as not charging

One related gap is worth naming. The official battery figures — about a year of runtime for the eufyCam 2 generation and half a year for the 2C — are lab numbers from a 20°C, ten-motion-events-per-day, thirty-seconds-per-event scenario, a usage profile almost no real driveway matches. Owners facing roads or moving shadows report a third of those numbers. But "draining fast" and "won't charge" are different failures: when a camera that once hit reasonable runtimes suddenly charges to 5% and no further, that is not heavy traffic triggering the sensor. That's a charging fault — run the checks above.

This decides more about your not-charging saga than any technical fix.

Warranty timing and repair economics

The standard warranty is 12 months (eufy's US store lists 18 with an annual membership). The charging-failure reports cluster at 13 to 24 months — precisely the dead zone. The first community reply to a charging complaint is a canned link to the brand's generic battery-tips article, and the support answer that follows is usually a discount voucher, not a repair: 30% off a new unit in one 2021 case, 20% for a HomeBase that died at 16 months in 2024, 15% for a three-camera failure — a discount the same owner noted was routinely beaten by ordinary sales. A winter-locked S340 owner's blunt summary: support calls are copy-and-paste, and the cold-weather charging behavior gets treated as something you should simply live with.

In Germany the situation has a legal twist. Between months 13 and 24, statutory Gewährleistung can require a replacement — but the burden of proof sits on the buyer, and a written expert opinion costs multiples of the ~€129 camera. Provable defects you can't afford to prove are worth nothing, which is exactly what owners discovered.

The counter-moves owners actually use: replacement battery packs and used HomeBases at $30–50 on the secondary market beat any goodwill voucher for restoring a working system. If your cameras matter, keep a spare.

What to do when a camera stops charging

When a camera stops charging, work this list — it mirrors how the failures actually resolve:

1. Check the thermometer first. Owner reports show that below roughly freezing, solar charging just stops, every winter, in every setup. Nothing is broken; an indoor USB charge is the only answer until spring.
2. Push the solar connector in until it's unmistakably seated. A millimeter short reads as total failure.
3. Solid blue = charging. Flashing blue with a flat percentage = no current arriving. Change cable, then 5V/2A brick, before blaming the camera.
4. Working camera + refused charger + healthy last-known percentage = failed pack, not a fault in the charging chain. Order the plug-in replacement.
5. Cap routine charges at 80%. The owners with multi-year cameras all do this; it's the cheapest insurance in the whole ecosystem.
6. Count the months since purchase before you argue with support — past month 12, you're negotiating a discount, so let the $30 spare-parts market win the comparison instead.

The cameras that refuse to charge in July and the cameras that laugh at February are usually the same model. The difference is connector luck, the cold-weather pattern nobody warned them about, and charge habits you control from day one.