Frequently Asked Questions

Which is better, the ELUSH 100A or the Qigreesol SA100A for off-grid solar setups?

I’d give the edge to the Qigreesol SA100A if build quality matters to you — its aluminum body and flame-retardant materials feel more substantial for permanent off-grid installations. The ELUSH is lighter at 0.81 kg and offers seven operating modes, which is great if you need complex timing setups. But for raw durability and a higher 4.3-star customer rating, the Qigreesol takes it.

Do both controllers support LiFePO4 batteries?

Yes, both the ELUSH 100A and Qigreesol SA100A support LiFePO4 batteries along with Seal, GEL, and Flooded types. The ELUSH specifically lists LifePO4 in its compatible battery options, while the Qigreesol covers the same lineup. Either one will work fine with your lithium batteries.

Which controller has better voltage protection features?

The ELUSH 100A offers more Thorough voltage protection, including safeguards against over-voltage, over-current, power failure, overcharge, deep discharge, reverse connection, and overheating. The Qigreesol SA100A has a solid three-layer protection that cuts power during surges over 32V and overheating above 65°C, but the ELUSH covers more scenarios.

Is the Qigreesol SA100A worth the extra money over the ELUSH 100A?

That depends on what you value. The Qigreesol adds solar panel voltage visualization and precise timing within 1-2 seconds, plus a higher 4.3-star rating from buyers. The ELUSH gives you more operating modes and a 1-year warranty with lifetime tech support for less upfront. I’d say the Qigreesol is worth it if you want better build quality and real-time PV monitoring — otherwise the ELUSH offers better value.

Which controller is easier to install for a beginner?

Both controllers require connecting the battery first before the solar panel to start up properly — the ELUSH manual even warns about this specifically. The Qigreesol has a large LED display that makes data easier to read at a glance, which helps beginners. I’d give a slight nod to the Qigreesol for its cleaner interface and aluminum build that feels less fragile during installation.

Can I use these controllers for solar street lights or traffic lights?

Yes, both work well for solar street lights and traffic light applications. The ELUSH has dedicated light control and light control + time delay modes among its seven operating options. The Qigreesol also explicitly mentions suitability for solar street lights and communication base stations, with its precise timing feature keeping errors within 1-2 seconds.