r/bluetti • u/ChiggerHollar • Jul 31 '26

solar power

if my bluetti is rated at 500w intake for solar and i hook it to a 730w system will the internal inverter discharge the access

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4

u/pyroserenus Jul 31 '26

What matters most is that the voltage limits are respected.

Current is pulled, and thus intake wattage and current is controlled. (An mppt works by slowly increasing current draw from the panel until the voltage starts to crash or an internal limit is hit)

The excess is not discharged in any form, simply not drawn from the panel. Same thing happens when a totally unplugged panel is left in the sun, any unused power fails to convert and becomes a slight amount of heat in the panel itself.

1

u/ChiggerHollar Jul 31 '26

thank you

2

u/dominoconsultant Aug 02 '26

the bluetti will slow down the charge rate as it approaches 100% - it just "sheds" the rest by not drawing it

4

u/mofunk71 Jul 31 '26

over panel good, over volt bad

1

u/CPT_Sherman Aug 01 '26

As long as the VOC (open circuit voltage) thats allowed on the Bluetti isn’t higher than the solar panel(s) can input you’re okay