Recent content by azaxi

I suggest instead to install a solar trickle charge and desulfator. Even trickle charger by itself should slow down sulfation as sulfation only develops when battery is discharged. Permanently attached desulfator will keep breaking up fresh sulfation from daily driving. It wont break down the...

Do not get me wrong, if I am designing a proper system, I use MPPT. My main system is 2.5kW 400V array, 10kWh battery, 5.5kW MPPT AIO At this point I have lot of solar components on hand. Needed light in the shed, so used 250W panel, 480Wh battery and 10A PWM controller to power 10W light for...

I agree with what you said except that I missed the point. Look at graph above. MPP area spans wide voltage range and when comparing optimal 95W and sub-optimal 55W, PV voltage does not change a lot, mainly output current changes with different solar exposure. Solar panel is non-ideal constant...

Do not give up on PWM. MPPT provides more versatility and allows higher voltage panels or arrays to be used with lower voltage battery. If panel operating voltage is only slightly higher above battery charging voltage, PWM controller will operate in MPP zone. For example a 12V battery and 18V...

Thanks, I figured later after posting this that short would burn 10 ohm resistor and defeat purpose of the breaker. 1kOhm would still provide reasonable tau=1sec to discharge the cap and wattage would be only around 2.5W. Btw. 52V across 10ohm resistor is not 520W but 270W ;) Just saying ...

I bought this 200A breaker: https://www.aliexpress.com/item/4000506382852.html Tested a small 48V system with standalone inverter and LiFePo4 48V battery (52.2V) at home. boiled water in 1500W electric kettle, worked no problem. Went to site and installed 4x 31HDC lead-acid bank with 5.5/11kW...

I installed this AIO in my camp in the woods, and quite like it. Did not realize the on/off switch is just for output, charger itself continues running while taking no power from battery. But when PVs generate enough voltage, it turns on and starts maintaining batteries. The information LCD is...

Forget solar panels and electricity, you don't need it to survive. From solar devices, greenhouse or solar cooker may be more valuable than solar panel. 1) Keep in shape. 2) Stock up on physical books with info you frequently refer to. When SHTF, internet may disappear, books wont. 3) Keep...

I would like to discuss Eaton PWHR12390W4FR battery (datasheet link here). These batteries are specified through Constant Power Discharge Characteristic (see first table in datasheet), as opposed to constant current usual for other batteries, and are designed for high loads. It is impossible to...

Some 10yrs ago I done self-imports to Canada and to USA. China was friendly then, not sure how is it now. Canadian customs were easy, but US customs were a pain in the neck, needlessly obstinate, just looking for trouble if they could not find any, they invented it. Switched to a broker. Same...

The 1000W DeWalt inverter has 2000W peak, this should be enough to start 350W inductive load. If it does not start, it may not necessarily be due to inverter overload, but battery could not handle 180A without dipping under 10.5V and inverter detected under-voltage and shut down. I have 1kW...

I have Jesudom VMII PLUS - 5.5KW and hooked it up for first time, generates 230VAC and takes 1.06A from 52.2VDC battery when no load is connected. Is 1% of maximum continuous load normal for budget inverters ? If this is normal, I don't mind, not looking to build a perfect system and hunt...