jonathan_winters
New Member
- Joined
- May 25, 2022
- Messages
- 22
I'm new to this forum so first off please let me know if I've posted this to the wrong place!
I just purchased an Anker 757 PowerHouse battery and it is working great for me. The biggest weakness is the solar input, which is limited to 30v and 10a.
Anker (now) sells their own panels which are rated for Vmp 29v and Imp 3.4a, so three of these in parallel (of course) fit perfectly into that max solar input. However, at $330 per 100w porta-panel they are outrageously expensive for someone who doesn't need the portability of those panels.
I'm trying (and struggling) to size a combination of panels that will maximize the 300w solar input (30v / 10a) -- ideally I'd like to overpanel it so that I'm getting as much power as possible even under sub-optimal conditions.
I've already confirmed directly with Anker that their over-voltage protector will simply trip and stop charging if solar input exceeds 30v. (And as expected, any amps beyond 10a will be wasted, but the 757 will continue to pull the full 10a without any shutoff.)
Here is my question:
Is there a device I can put between the panels and the solar input on the 757 that could regulate the voltage to a max of something like 29v?
For example, I am thinking about putting 2x 180w panels with Vmp 16.77V and Imp 11.75 in series for a total of 33.54v and 11.75a, and then look to something to drop the voltage.
Would a charge controller or a buck converter achieve this? If so, do you have any recommendations about what device (specifically, or in general) to look for?
Alternatively, if someone knows how to search for panels that already come in at a specific voltage (either just under Vmp 30v or 15v), that would greatly simplify things -- I can't seem to get search results to deliver panel results with specific voltage output.
I'm tempted to just start buying things to test and return if they don't work, but it would be nice to save that hardware churn if someone has any advice to point me in the right direction.
I just purchased an Anker 757 PowerHouse battery and it is working great for me. The biggest weakness is the solar input, which is limited to 30v and 10a.
Anker (now) sells their own panels which are rated for Vmp 29v and Imp 3.4a, so three of these in parallel (of course) fit perfectly into that max solar input. However, at $330 per 100w porta-panel they are outrageously expensive for someone who doesn't need the portability of those panels.
I'm trying (and struggling) to size a combination of panels that will maximize the 300w solar input (30v / 10a) -- ideally I'd like to overpanel it so that I'm getting as much power as possible even under sub-optimal conditions.
I've already confirmed directly with Anker that their over-voltage protector will simply trip and stop charging if solar input exceeds 30v. (And as expected, any amps beyond 10a will be wasted, but the 757 will continue to pull the full 10a without any shutoff.)
Here is my question:
Is there a device I can put between the panels and the solar input on the 757 that could regulate the voltage to a max of something like 29v?
For example, I am thinking about putting 2x 180w panels with Vmp 16.77V and Imp 11.75 in series for a total of 33.54v and 11.75a, and then look to something to drop the voltage.
Would a charge controller or a buck converter achieve this? If so, do you have any recommendations about what device (specifically, or in general) to look for?
Alternatively, if someone knows how to search for panels that already come in at a specific voltage (either just under Vmp 30v or 15v), that would greatly simplify things -- I can't seem to get search results to deliver panel results with specific voltage output.
I'm tempted to just start buying things to test and return if they don't work, but it would be nice to save that hardware churn if someone has any advice to point me in the right direction.