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How to charge a solar torch

Updated: 22 October 2026

The torch was sold as solar, it has sat in a drawer since autumn, and now the beam is dull or nothing at all. How to charge a solar torch in Britain is three paths: a full USB charge if the model has a port, a crank when you need light with no socket, and the panel only as a daylight top-up. A panel the size of a torch head does not replace the other two, especially in winter or behind glass. This page does not rank the five listings. The table is the [solar torch comparison](/hub/garden-decor/solar-torch). Peter F., 21 October 2026. Times below are seller claims, not measurements for this page.

The torch was sold as solar, it has sat in a drawer since autumn, and now the beam is dull or nothing at all.

Our top picks

igadgitz Xtra igadgitz Xtra U4456

Best overall

igadgitz Xtra igadgitz Xtra U4456
8.3/10about £17.99
View offer
PCXWTLN PCXWTLN IPX6

Alternative

PCXWTLN PCXWTLN IPX6
5.8/10about £14.98
View offer
E-SHIDAI E-SHIDAI USB and solar

Best value

E-SHIDAI E-SHIDAI USB and solar
7.9/10about £7.91
View offer
On this page
  1. 1.USB first, if the torch has a port
  2. 2.What the crank actually adds
  3. 3.Where to leave the solar panel
  4. 4.A monthly check

USB first, if the torch has a port

If the torch has a USB port, give it one full charge from a normal 5 V source before you trust the panel. PCXWTLN includes a cable and claims a full solar charge in 5 to 6 hours. The connector is not in the specification table, so match the plug in the box rather than assuming USB-C. E-SHIDAI claims USB in and out, and the bullets say adapters above 5 V are not compatible. The mains adapter is not in the box. Vellichor reviews from the United Kingdom say there is no charge-level light and that the connector is not USB-C. A phone fast charger is the wrong brick for the E-SHIDAI line. Stop if the body becomes hot. The port and water checks are the solar torch buying guide.

What the crank actually adds

The crank is the path when there is no socket and you need light now. One minute does not fill every cell, and sellers do not describe the same mode. On the igadgitz Xtra U4456, a bullet says one minute of cranking provides 60 to 110 minutes of light, while the runtime field says 1 hour and the battery-life field says 4 hours. The cell is an 80 mAh NiMH. Synkris says one minute generates eight minutes of light. Do not copy Goal Zero’s ratio, or Wolph’s 15-minute cap on a different torch, onto these two. Stop if the crank smells hot. Who should buy which crank is on best solar torch.
igadgitz Xtra igadgitz Xtra U4456

Testsieger

igadgitz Xtra igadgitz Xtra U4456
8.3/10about £17.99
View offer

Where to leave the solar panel

The panel keeps a windowsill torch from going flat between uses. It does not rescue a glovebox torch, because a closed glovebox has no sun on the cells. Face the panel at daylight. South-facing glass is the usual UK spot, and dirty plastic cuts the trickle. Festive Lights, writing about garden solar lights, lists a UK winter and glass as reasons a small panel stays dim. The igadgitz one-hour sunlight line is a claim for direct sun, not a grey December afternoon. Use the panel to maintain a torch you have already USB-charged.

A monthly check

Once a month, switch the torch on. A beam that is already weak on the windowsill will be weaker in a power cut. If the port is loose, or the torch will not take a charge, stop using that port. Vellichor’s UK reviews include connectors that fall out. Do not pry the case open. A hot or swollen torch comes off charge immediately. A loose cell goes to a shop battery point. A sealed torch is electrical waste at a recycling centre. Where it should live before the lights go out is on solar torch for power cuts.

Common questions

Can I leave it on a windowsill?
Yes, if daylight reaches the panel. A south-facing sill is the usual place. A sill behind a sofa, or a north wall in December, will not keep a small panel ahead of self-discharge. The windowsill maintains a charge you already gave the torch. It is a poor first charge for a brand-new lithium cell.
Does double glazing block the charge?
Double glazing reduces what a torch-sized panel collects. It does not switch the panel off. Festive Lights makes that point for garden solar lights. The igadgitz one-hour sunlight line assumes direct sun, not a grey day through glass. In a British winter, plan on USB or the crank for a real top-up.
How long should I turn the crank?
Use the ratio on your own listing, and treat it as a claim. igadgitz says one minute for 60 to 110 minutes, without naming the mode, while other fields say 1 hour and 4 hours. Synkris says one minute for eight minutes. Wolph’s 15-minute warning applies to the LF-3, not to these two. Stop if the body warms up.
Does one minute fill the battery?
One minute does not fill these cells. On Synkris it is claimed to buy eight minutes of light. On the igadgitz it is claimed to buy 60 to 110 minutes, from an 80 mAh NiMH, and the listing does not say that is a full charge. A minute of winding is an emergency top-up. A full USB charge is how you know the cell was filled.
What charger voltage is safe for the E-SHIDAI listing?
The E-SHIDAI bullets say adapters above 5 V are not compatible. Use a plain 5 V USB source, not a fast charger. The mains adapter is not in the box. There is no equivalent voltage line on the PCXWTLN table. If any of these torches becomes hot on charge, unplug it. OPSS reports of hot lithium torches name other models, not these ASINs.
What if it will not take a charge at all?
Stop, and use the seller’s returns route while you still can. A UK review of the E-SHIDAI says it will not charge. Vellichor reviews include ports that break. Forcing a plug or opening the case is how a nuisance becomes a fire risk. A swollen cell is waste, not a DIY repair. The monthly check is there so you find a dead port before a power cut does.

Related pages

Solar torch or garden stake

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Best solar torch: crank pick, USB value, thin sample

Solar torch buying guide: charge, water, then lumens

Solar torch for power cuts: crank now or charge first

Sources

Public UK sources for the IP code, product marks, battery waste and green claims. amazon.co.uk prices, stars and review counts were taken from the listings on 21 October 2026. No lumen, ingress or crank test was run for this page.

  1. BSI, BS EN 60529:1992+A2:2013 (retrieved 21 October 2026)
  2. RS, IP ratings (retrieved 21 October 2026)
  3. GOV.UK, consumer product safety advice (retrieved 21 October 2026)
  4. GOV.UK, batteries (retrieved 21 October 2026)
  5. GOV.UK, recycling batteries and electrical waste (retrieved 21 October 2026)
  6. OPSS, product safety report 2408-0050 (retrieved 21 October 2026)
  7. ASA, CAP Code rule 11.1 (retrieved 21 October 2026)
  8. Streamlight, ANSI/PLATO FL 1 summary (retrieved 21 October 2026)