I need a battery for my 300 watt solar panel, which Amazon products do you suggest?
I need a battery for my 300 watt solar panel, which Amazon products do you suggest?
So I need the battery to charge using my 300 watt solar panel.
I want a UK 3-pin power socket to connect my laptop.
I don’t want to spend more than £50.
Also, I’d like to use my laptop at night, away from the solar panel for as long as possible.
Thanks for your help!
This Anker device is designed to handle the complete 300W from your solar panel and features typical UK 13A 3-pin connectors, meeting your needs:-
https://www.amazon.co.uk/Anker-Portable-...B0C6MC2CTN
Unfortunately, you won't likely discover a power bank offering the full 300W for under 50 pounds. The Anker model costs £449.
there are options available, but I prefer something around 20 quid rather than 50.
Could you provide the details about this £20 battery? It seems to be related to a solar panel setup, possibly needing a converter for safe charging. The text mentions concerns about voltage conversion and safety with the battery type. A link to the product is also included for reference.
It mentions 200 or 300 watts but it's closer to 140 in reality. I'm looking for a UK battery with a 3-pin plug, seeing as they have multiple options. I hope it's around 140 watts and can charge them effectively. How long do these typically last?
300W represents the ideal capacity under sunny conditions, but another value should also be considered depending on voltage and current requirements. For DC power charging, relays from brands like Altronix are available at very affordable prices. The next consideration involves the battery type being used—this will influence how the charging relay connects, such as pairing with 12V SLA batteries or needing additional equipment for different voltages.
It will be important to understand precisely what output the solar panel provides and what power requirements your laptop has. Probably the key concern is whether it’s AC or DC power. This depends on the voltage levels. Most batteries operate around 12 volts and reach about 13 volts. Many laptops require 19 volts, though this varies widely between models. You’ll need a device that can handle all these voltage levels. DC/DC converters are affordable, but you must factor that expense into the overall cost. If it’s about AC power, the costs will increase significantly.
Let's simplify this.
We're dealing with a standard 3-pin UK plug that works with 230V AC at 50Hz, up to 13 Amps.
The battery we're talking about is a typical SLA type, rated at 12 Volts DC.
You can't just plug a 13A socket straight into the battery without a special setup that changes the voltage from AC to DC.
It seems you're referring to several 13A sockets or a setup involving multiple components.
A 300W solar panel on Amazon.co.uk displays around 27.9V at up to 11.8A in sunlight.
You can't connect that 27.6V directly to a 12V battery without a special DC-to-AC converter.
A generic laptop power supply with a 13A plug is likely what you're describing.
To run your laptop, you need 230V AC, which usually comes from a DC-to-AC inverter powered by an SLA battery.
For charging, you require a DC-to-DC converter to adjust the voltage from 27.6V to match the battery's 12V DC.
Alternatively, you could use LiPO batteries and a suitable converter.
Unless you're comfortable with electronics design, the most practical choice is a "Power Bank" that includes all these parts:
1) A converter from 27V to 12V DC
2) A sealed lead acid battery
3) An inverter with 230V output on a 13A socket
Building this for around £20 is probably not feasible.
A 12V 7Ah battery alone will cost about £15. You'd then need a converter with at least 200W, and an inverter rated for 100W.
If you find a cheap battery bank or inverter for £50, it might not work properly and could harm your laptop charger.
I’d expect a decent power bank or inverter to cost at least £100.
Battery life is also important—smaller batteries last only about an hour under typical use. For longer use, you’d need a larger capacity.
Thanks for the assistance. I was thinking of purchasing a few spare batteries for my laptop—about five in the sun—to charge them all at once and keep them ready later. It wouldn’t cost much, especially second-hand options. However, I’d rather have just one large battery that I could plug in later in the evening when it gets dark. Hopefully, it will last long enough; otherwise, I might skip it. Appreciate your understanding!