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Topic: Logitech X540 pc speakers on battery/accu mod? (Read 3273 times) previous topic - next topic
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Logitech X540 pc speakers on battery/accu mod?

I'd like to know if this is possible. I want to run my 540 speakers on batteries or a rechargable accu.

Im not handy or very technical, so I was hoping for there to be some nifty tools or converters out there?

I can't exactly search it because I don't know what to look for, I tried the obvious terms but no luck.

The 2 prong power into the extensio cord says 250 V 2.5 A.

Logitech X540 pc speakers on battery/accu mod?

Reply #1 –
Quote from: chrisssj2 on
Im not handy or very technical, so I was hoping for there to be some nifty tools or converters out there?

Okay, the most simple solution would be:
1. Buy a 12V lead acid battery (car starter battery or smaller)
2. Buy a converter that transforms 12V DC to 120/220V AC (supplies for caravaning, camping ect.)
You could charge this setup with a normal car battery charger.
Remember: lead acid batterys are bulky and heavy, if you need this to be transportable look for sealed batteries like AGM because leaked acid is a pita (and, not to mention, dangerous).

Unless you want to dig into electrical engineering this is the only idea that comes to my mind.
Pretty awkward solution, are there no battery powered solutions or are you just trying to avoid the cost?

Logitech X540 pc speakers on battery/accu mod?

Reply #2 –
Perhaps a UPS[/u] (Uninterruptable power supply)...  These are designed to keep a computer running when the power fails.    Your speakers take far less power than a desktop computer & monitor, so a medium-duty UPS should hopefully power your speakers for at least a few hours.  (Most UPS's have an alarm when the AC power goes off, and you'd need an option to disable the alarm.) 

Before you buy a UPS, you can check the specs.  There is usually a chart or graph that tells you how long the power will last with a given load.  The 2.5 Amp current and input power (Wattage) rating for your speakers is a maximum number, and on average it will require less power.  If you need to calculate Wattage, you simply multiply Volts X Amps.  (i.e. 220V x 2.5Amps = 550W...  But, I'm sure those speakers are NOT consuming anywhere near 500W on average...  You  can buy a little gizmo called "Kill-A-Watt" that measures AC power consumption.)

A simpler solution would be able to find a boom-box with a line-in connection.  These often run on "D" cells, and you can get rechargable batteries if you want.

Or, maybe you could use an amplifier made for a car stereo along with some regular  passive (non-powered) speakers.  This would require a heavy-duty 12V battery, but you could get by with something smaller than an automotive battery depending on amplifier power and the number of hours you need to get out of a charge.



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All electronics (including your Logitech speakers) run on DC internally.  So, it is possible to run your speakers from batteries.  You'd need to know the internal DC voltage(s) and current consumption.  (These can be measured with a multimeter.)  And, you'd need to add a DC power connector and a switch to switch between AC & battery.  And, you'd have to accomplish that without electical damage and without too much cosmetic/mechanical damage.    This shouldn't be too hard for someone who understands electronics, assumihg it's not too hard to disassemble the speaker and access the electronics.