Battery packs cover a shift or several, but a deployment running for weeks with no grid access eventually needs a way to recharge without trucking batteries out and back. That's what the LI-S2-40 solar panel accessory is for.
The LI-S2-40 is a 40W foldable solar panel accessory, sold as a standalone add-on rather than part of any standard kit. It pairs with the LI-500's optional charger case, extending that tower's charging options beyond mains AC or swapping in pre-charged packs.
For sites with realistic grid access, solar charging is a nice-to-have at best — mains power or a straightforward pack-swap rotation is simpler. It matters most for genuinely remote, extended deployments: a wellhead or pipeline site (see our off-grid lighting guide) running for weeks where neither mains access nor a regular battery-swap logistics chain is realistic.
Solar charging output depends on sunlight availability and isn't a substitute for having enough battery capacity to begin with — it's a way to extend a deployment's independence from external charging infrastructure, not a way to run indefinitely on a single pack. Planning still starts with the same battery-pack-rotation thinking covered in our battery lifecycle guide, with solar charging added as a way to top up packs on-site rather than shipping them out.
Being foldable matters for the same reason compact, single-person-deployable lighting matters generally — a solar panel that needs a vehicle and a crew to transport and set up defeats much of the purpose on a genuinely remote site with limited logistics support.
The LI-S2-40 is most relevant paired with the LI-500 on extended, genuinely off-grid deployments — remote wellhead monitoring, pipeline right-of-way work, or disaster response staging areas running multiple days with no practical resupply. Contact us for current availability and to confirm fit for your specific deployment.
A 40W foldable solar panel accessory, sold as a standalone add-on, that pairs with the LI-500's optional charger case for off-grid charging.
No — it's a supplement, not a replacement. Solar output depends on sunlight availability; battery-pack rotation planning still matters, with solar charging added to extend independence from external charging infrastructure.
For genuinely remote, extended deployments — weeks-long assignments with no realistic mains access or regular battery-swap logistics — rather than sites with practical grid access, where mains or swapping is simpler.
The LI-500, via its optional charger case.
Lighting and power considerations for sites with no grid access.
Read More →What affects battery life and when to plan for replacement.
Read More →How to decide between battery-only and AC-capable models.
Read More →