LinkSolar is a B2B sourcing partner with direct factory-side QA and production access, specialized in power line monitoring and custom industrial solar. We build mini solar panels to your application — custom shapes, voltages, and connectors — rather than selling fixed SKUs. Every spec below is a customizable range; final parameters are confirmed per project before production.
MOQ from 5 pcs Samples 7–14 days Production 2–4 weeks Cell back-contact (IBC) option Hangzhou, China · global B2B
01 Customization Range
We don't sell off-the-shelf wattages. These are the parameter envelopes our partner factories can build within — pick what your device needs, confirm with us, we sample.
| Parameter | Customizable range | Most-requested / notes |
|---|---|---|
| Power | 0.11 W → standard module | Real range 0.11 W (35×22 ETFE) – 25 W (MPPT) in stock; larger custom on request |
| Voltage (Vmp) | 3 V – 48 V custom | 5 V / 6 V most common for IoT direct-drive (no DC-DC, saves conversion loss) |
| Multi-voltage switch | 5V / 6V / 9V / 12V | 4 W & 8 W panels support switchable output — one panel fits most trail / security cameras |
| Dimensions | from 35 × 22 mm | Fully custom outline to fit enclosure / housing |
| Encapsulation | ETFE / PET / Glass | See comparison below — chosen by outdoor lifetime requirement |
| Solar cell | Mono / back-contact (IBC) | High-efficiency SunPower-class IBC back-contact cells for max output in a small footprint |
| Output / connector | USB-A · USB-C · JST · solder pads · custom | Specified to your PCB / battery-management input |
| Surface / color | Black / blue / custom | Anti-glare or branding options |
Why a range, not a SKU: industrial IoT, PLM sensors, and OEM devices each have different enclosure, voltage, and lifetime constraints. A fixed catalog forces you to compromise; a custom build matches the panel to the device. The trade-off is a short confirmation + sampling cycle (below) before production.
02 Encapsulation Comparison (choose by outdoor lifetime)
| Type | UV / outdoor durability | Weight | Cost | Best for |
|---|---|---|---|---|
| ETFE | Best UV resistance, longest outdoor life | Light | Highest | Long-deployment PLM / remote sensors |
| PET | Lowest cost; tends to yellow after ~2–3 yrs outdoors | Light | Lowest | Indoor / short-life / cost-sensitive |
| Glass | Most durable long-term | Heavy | Mid | Fixed installs where weight is OK |
Sourcing note For unattended outdoor IoT/PLM deployments we usually recommend ETFE despite the cost — PET yellowing reduces output over a 2–3 year horizon, which matters more than the upfront saving when the device is on a transmission line or remote site.
03 Sample Reference Products available now · sampleable
Real in-stock mini panels for IoT / smart sensors — order as samples for evaluation today (from $9.90, low / no MOQ). Use them as a reference baseline; each is also fully customizable (size / voltage / output / encapsulation) for your device.
| Sample product | Power | Voltage | Size | Encapsulation | From (USD) |
|---|---|---|---|---|---|
| 4 W Multi-Voltage ⭐ best-seller | 4 W | 5 / 6 / 9 / 12 V switchable | — | mono · IP66 · w/ bracket | $42.90 |
| Glass mini (113×113) | 2.3 W | 5.5 V | 113 × 113 mm | tempered glass | $13.90 |
| Glass mini (60×45) | 0.45 W | 3 V | 60 × 45 mm | tempered glass | $9.90 |
| Ring-style mini | 0.33 W | 2.75 V | ring form | matte PET | $9.90 |
| ETFE micro (35×22) | 0.11 W | 5 V | 35 × 22 mm | ETFE | $9.90 |
| ETFE mini (45×45) | 0.18 W | 6 V | 45 × 45 mm | ETFE | $9.90 |
Higher power & other voltages: 8 W, 12 W, and 25 W (MPPT) options are also stocked, plus the full 3–48 V custom range above. The 0.11 W ETFE (35 × 22 mm) is among the smallest we build — tell us your enclosure and we match the panel to it.
Application fit — starting points mapping the samples above to use cases (all CUSTOMIZABLE, confirmed before production):
| Application | Reference power | Voltage | Encapsulation |
|---|---|---|---|
| Asset / GPS tracker | 0.11–0.45 W | 3 / 5 V | ETFE / glass |
| IoT sensor (LoRa / NB-IoT) | 0.18–2.3 W | 3–6 V direct | ETFE |
| Trail / security camera | 4 W switchable | 5 / 6 / 9 / 12 V | mono · IP66 |
| ESP32 / Arduino weather station | 4–8 W CUSTOM | 5 / 6 V | ETFE |
| Power line monitoring (PLM) | custom CUSTOM | custom (cold-climate sizing) | ETFE |
04 Engineering Notes (from sourcing & field experience)
Charging IC A common failure on small panels: pairing a raw panel with a TP4056 module. The panel's output voltage is unstable under varying light, and the TP4056's default ~1 A charge current can exceed a small panel's supply, pushing the board into repeated under-voltage protection. For solar input, adjust the charge current or use a solar-aware charger IC (e.g. bq24074 class). Specify your charge IC when you send the requirement so we match panel current to it.
Cold-climate sizing Northern winters (2–3 h sun + snow on the panel face) routinely starve devices sized for average conditions. For PLM / trail-camera deployments above mid-latitudes, oversize the panel and confirm the worst-month insolation — we size to worst case, not annual average.
Multi-voltage advantage A 4 W or 8 W switchable panel (5/6/9/12 V) covers most trail and security cameras with one part number, removing voltage-mismatch returns. Useful when you serve several device models from one inventory line.
05 Custom Workflow — specs confirmed before production
01
Spec intake
You send device, voltage, size, output, lifetime
02
Confirm params
We confirm buildable spec + quote (this gate is mandatory before any production)
03
Sample
7–14 day samples to your spec
04
Approve
You validate on your device
05
Production
2–4 weeks, factory-side QA
06
Ship
Global B2B export
Confirmation gate: because every panel is built to spec, nothing goes to production until parameters are confirmed in writing. This protects both sides — you get a panel matched to your device, not a catalog approximation.
06 Sourcing Terms
MOQ
from 5 pcs
low MOQ for prototyping / pilot runs
Samples
7–14 days
to your confirmed spec
Production
2–4 weeks
with factory-side QA
Indicative price
from $42.90
4W multi-voltage ref.; final quote per spec
Certification
per project
SunPower-class IBC cell option; target-market certs on request
Export
global B2B
utility OEM / IoT integrator / equipment mfr
Send us your device spec — we'll confirm a buildable panel + quote
Voltage, size, output, deployment environment. Samples in 7–14 days, MOQ from 5 pcs.
Request a custom quote →
LinkSolar · B2B Solar Sourcing · Hangzhou, China · ding@linksolar.net Capability datasheet · all specs confirmed per project before production · 2026
