inexpensive panels
Hi all, I know nothing about this firm--but the prices appear to be low: https://www.santansolar.com/?fbclid=IwAR17Xx_DhkB3h13BFmTjqejxTlf92ZO7UsVEAiNjNmcyNzrOkJx9XgYN26c
Forum Discussion
Gdetrailer wrote:
MPPT does not always "equal" "more power" or "longer charging" either, there are limitations on how much energy the panel can actually efficiently garner from the given strength and duration of the sun that falls on it. MPPT attempts to maximize what can be harvested but in many cases you will only be talking in fractions of Ahrs per day over a PWM controller with a single 24V panel. Not uncommon for home panel arrays to be wired for 48V and higher..
Could you possibly show how many fractions of AHrs harvested: Using PWM and MPPT controllers using the panels below with all conditions being the same.
- 250 watt 24V panel (VOC 37 V - Imp 8 A)
- 250 watt 12V panel (VOC 20 V - Imp 12 A)
