Sundaya Apple - Solar Regulators

Sundaya Apple regulator with thumb

The Apple is a Pulse Width Modulation (PWM) charge / discharger regulator with a unique battery forced health improvement feature (FHI©). The Apple is equipped with an alarm to warn the user when battery is close to forced disconnect. The Apple uses latest technology ultra efficient switching components, which results in an extremely low voltage drop and almost no heat generation.

"An apple a day keeps the doctor away" could be an advertising slogan for their device, since charge controllers are the health guards of solar batteries. Above all, they prevent a reverse current from the battery to the solar generator when there is no light input, and they prevent overcharging, which leads to gassing and loss of water and would dramatically reduce lifetime. Sundaya's Apple - as green in colour as a Granny Smith apple disconnects the load when the battery is in danger of being too deeply discharged.

The round shaped Apple is equipped with 11 LEDs. In order to extend battery lifetime, it has to be fully charged, and for that purpose the Apple runs in the so-called penalty mode. If the load cycles too long on a low charging level, the cut off level is increased by a specific voltage step and the load is disconnected to let the sun charge up the batteries again. It employs the penalty point system, or Forced Health Improvement (FHI), where a microprocessor gradually adapts the voltage thresholds.

The Apple works with the series principle, meaning that overcharging of the battery is prevented by open-circuiting the solar generator.

Sort by:
Regulator Apple 10A 12V
Charge Controller "Apple" - Solar Regulator - 12 Volt - 10 Amp10 Amp charge controller with ultra efficient switching components resulting in an extremely low voltage drop and almost no heat generation.[SUN-RG10]
13 in stock
Regulator Apple 20A 12V
Charge Controller "Apple" - Solar Regulator - 12 Volt - 20 Amp20 Amp charge controller with ultra efficient switching components resulting in an extremely low voltage drop and almost no heat generation.[SUN-RG20]
10 in stock
Showing 1 to 2 (of 2 items)
Result Pages:  1 

We install solar systems in Northern NSW and Southern QLD.

Gold Coast (from Coolangatta to Southport), Nerang and Hinterland (Beaudesert) and out West (Warwick, Stanthorpe, Killarney)

Northern NSW (Tweed Heads to Yamba, including Evans Head, Byron Bay and Ballina); the Far North Coast Hinterland (Grafton via Lismore to Murwillumbah) and out West (Casino to Tenterfield, including Drake and Tabulam, as well as Woodenbong and Bonalbo)

For larger system we also go up to Brisbane or down to Coffs Harbour and even Glen Innes. Other places by arrangement.

We are Open for Business

Rainbow Power Company would like to assure our customers that we are trading (not quite as normal). System designers are working from home and can customise a quote for you (free of charge) over the phone and online. We are still dispatching and posting items, with safety precautions in place. You can still order online or over the phone, and pick up items from RPC (our show room is closed however, and appointments must be made to pick up orders). We are still doing site inspections, keeping the recommended social distancing.

Contact us

This is the perfect time to start thinking about your power needs for the future, reducing your bills, and safeguarding against future power outages, so call today and get in before the oncoming solar rush. PH: 02 6689 1430 or send an enquiry
..stay safe and healthy, your RPC family