https://wiki.jw-tech.eu/index.php?action=history&feed=atom&title=WSAL16120_%E2%80%93_Solar_Power_Manager%2FenWSAL16120 – Solar Power Manager/en - Versionsgeschichte2026-10-23T22:11:25ZVersionsgeschichte dieser Seite in JW Tech WikiMediaWiki 1.43.9https://wiki.jw-tech.eu/index.php?title=WSAL16120_%E2%80%93_Solar_Power_Manager/en&diff=1700&oldid=prevJWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex2026-09-05T22:35:05Z<p>Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex</p>
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'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.<br />
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== Summary ==<br />
The Waveshare Solar Power Manager (SKU WSAL16120) manages charging of 3.7V lithium batteries from 6-24V solar panels or USB inputs. It supports MPPT and provides 5V outputs for low-power IoT projects.<br />
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== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL16120 WSAL16120 – Solar Power Management Module, for 6V~24V Solar Panel]<br />
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== Technical overview ==<br />
* Uses the CN3791 as the solar charging management chip; suitable for 3.7V lithium batteries with 6-24V solar panels.<br />
* Supports MPPT (Maximum Power Point Tracking) to maximize solar panel efficiency.<br />
* Charging inputs: DC-002 jack or screw terminal for solar input; USB input (Micro-USB or Type-C depending on variant).<br />
* Outputs: USB port for 5V/1A and pin header for 3.3V or 5V; both outputs can be powered simultaneously.<br />
* Multiple protection circuits: overcharge, over-discharge, reverse polarity, overheat, overcurrent.<br />
* Operating temperature range: -40°C to 85°C.<br />
* The MPPT SET dip switch on the back is set to the solar panel input level, e.g., 9V for a 9V panel.<br />
* Maximum charging power is about 5W; full charge via USB (5V/2A adapter) takes about 1 hour, via solar under optimal conditions almost 2 hours.<br />
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== Notes and version constraints ==<br />
* Only rechargeable 3.7V lithium batteries are supported; LiFePO4 (3.2V) is not supported.<br />
* The module does not work without a battery; both charging and discharging require a connected battery.<br />
* Do not occupy both battery positions (14500 holder and PH2.0 connector) at the same time; use only one battery per operation.<br />
* For iPhone charging, the D+/D- pins on the USB output must be shorted (weld a 0R resistor); without this modification, Apple devices will not charge.<br />
* The module is intended for low-power IoT; powering a Raspberry Pi is not recommended.<br />
* The main switch must be on for charging and discharging to work; when off, the module behaves as if the battery were removed.<br />
* Exact compatibility with specific battery sizes/capacities should be verified before purchase; the source does not provide a complete compatibility list.<br />
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== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/Solar_Power_Manager Solar Power Manager - Waveshare Wiki]<br />
* Source revision: 90697<br />
* Captured: 2026-08-31T03:16:03+00:00<br />
* SHA-256: <code>774aa334a491152b73d95948f1ff565906b7da26815cd6d75e48f69220513d14</code></div>JWTechPublisher