SUN-RG20 (20 amp) charge controller kits..
Sundaya Apple Charge Controllers The Apple is a 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.

« Since British pop group 'The Beatles' founded it's legendary Apple record label in London in 1968, the name of the fruit has become synonymous with successful products. The best example is the US company Apple Corp. But since Nov. 2004, the word might also boost sales of a charge controller launched by Singapore- headquartered Sundaya.
"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 a more affordable version of the company's S3, which has the same 'core' as the Apple, but comes with an integrated battery box. Both are equipped with 12 LED's. In order to extend battery lifetime, it has to be fully charged, and for that purpose the Apple and the S3 run 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 - 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.


Sundaya's models work with the series principle, meaning that overcharging of the battery is prevented by open-circuiting the solar generator. Sundaya's devices can charge batteries of up to only 12 volts. "We target rural electrification" says KC Mui, developer at Sundaya International Pte's R & D Centre in Singapore. The company, which operates it's charge controller factory in the Indonesian capital Jakarta, sells most of it's products to Asia's big off-grid markets of Indonesia, Sri Lanka, Bangladesh, India, and the Philippines, as well as the Republic of South Africa, but also has plans to enter the South American and European markets.
The stylish Apple has good chances of becoming a bestseller, if one considers that it's 'sister model', S3, was sold 40,000 times since it hit the market in March 2004.»
PHOTON International, January 2005.



Weight: 0.33300 Kilograms
Warranty: 2yrs