Powerbank charging via solar input

[Blitz]

Hi
I have a Vitoman 1500 flashspeed powerstation. I want to be able to charge it via my leisure batteries using the 400w solar input (Anderson) rather than the slow 200w car cigarette input which will probably melt everything inc my van.
Prob is the solar input voltage has to be an unusual high 30-60volt so I need to up my 12v to this. I'm not expert so can anyone tell me if the following item will do this job ?
I don't want to blow my new expensive toy

Product Name: 12V to 48V 8A Step-up DC-DC Converter; Input range: 10-25V DC
Features
1. 100% full power and stable current output
2. 100% Imported components
3. Wide input voltage from 10-25Vdc
4. 100% waterproof and anti-shock protection, Ultra compact size, light weight
5. Industry grade DC12V to DC48V step-up converter, efficiency up to 96%
6. Certificates: CE/RoHS
7. Waterproof level: IP68
8. Die-cast aluminum shell, epoxy potting, Cooling by free air convection,
9. Protections: Over-current, Over-voltage, Over-temperature and Over-load Auto-recovery when device is back to normal operating
10. Non-Isolated Module
11. 1 year , life time up to 100,000 hours.

Specifications
Input rated voltage: 12V DC
Input voltage range: 10-25V DC
Efficiency: 97% (half load) ; 96% (full load)
Output voltage: 48V DC
Output current: 8 Amps
Output rated power: 384 W
Output peak power: 125%
Voltage regulation: < 1%
Load regulation: < 2%
Ripple(full load test): < 180mV
No-load current: < 30mA
Working Temperature: -40°c ~ +80°c
Waterproof rating: IP 68
Protections: Over-load, Over-current, Over-temperature, Over-voltage
Machine size: 100*80*39mm
N. Weight: 535g
Cooling way: Free air convection
Certifications: CE, RoHS

 

[Dellmassive]

Got a link for that converter?

Looks like it's limited to 8A,

So what's your power bank input spec?


In not sure you will get near the 400W. And the converter will get hot as well.

It can be done, and is a way to get a faster charge.

The recommended step up converter is the Victron Orion 12/36 or 48,,v output....but they a pricey units.

Loads of videos on YT showing the method for fast charging the EcoFlow delta battery banks.

 

[Blitz]

Alternatively I can AC charge via my 2000w inverter at the max 1500 input but that's inefficient. Although if proper step up converters are expensive then perhaps it's not worth the hassle. I have a dedicated 200w solar suitcase for it anyway.
Is it safe to charge my leisure batteries from the alternator and run my inverter at 1500w at the same time? Or should I separate the tasks?
Ta

 

[roadtripper]

Is it safe to charge my leisure batteries from the alternator and run my inverter at 1500w at the same time? Or should I separate the tasks?

It somewhat depends on your charger and how much of your alternator power budget it consumes.

The rough guidance is leisure charging shouldn't take more than 1/3 the peak output of the alternator to ensure there is no risk of the starter discharging during engine running.

1500w inverter at roughly 80% efficiency is going to be drawing just under 1900w on the input, at a nominal 12v that's around 150 amps - which is likely beyond any charger.

So while I don't think it's unsafe you are likely to drain your leisure batteries faster than the charger can charge them - whichever way you do it you are going to have to recharge the leisure batteries after you charge your power pack.

 

[Blitz]

Many thanks for that. I get your points and thanks for the amp figures. Back to good old power management between the two systems, using a bit of noggin. My powerbank is a back up really, nothing relies on it. The 200amp of lithium do the heavy lifting.

 

[Dellmassive]

It somewhat depends on your charger and how much of your alternator power budget it consumes.

The rough guidance is leisure charging shouldn't take more than 1/3 the peak output of the alternator to ensure there is no risk of the starter discharging during engine running.

1500w inverter at roughly 80% efficiency is going to be drawing just under 1900w on the input, at a nominal 12v that's around 150 amps - which is likely beyond any charger.

So while I don't think it's unsafe you are likely to drain your leisure batteries faster than the charger can charge them - whichever way you do it you are going to have to recharge the leisure batteries after you charge your power pack.

I would deffo be running the engine while charging that box at 1500w.... Using the 2000w inverter on the van.

That way you are using diesel energy to charge your box, but also not killing your leisure battery at the same time.

Id imaging your battery box has an app that allows you too change the AC charge rate.... Like the EcoFlow units.

Is so you can drop the charge rate to 1000w to lessen the load on your system, but still fun the engine..... Unless that is you have a massive bank of lithium's.