by   January 27 2015   
I read reviewers saying this keyboard was bad only because it wouldn't charge. It doesn't have a secondary method to charge and people hated it because it was dead after hours. This is what I read. What I found was completely opposite and proves once again some people need not post reviews until they learn Solar products can not charge in Total Darkness. But one little 15 W bulb or a LED does the trick and has done so for 3 + years.

Logitech K750 better than your reviewers

K 750_Solar _KeyboardWireless Solar Keyboard Manufacturer Part# 920-002912 UPC Code: 097855071613

I don't often write about hardware outside of internal components. 

But this little Solar Charged K750 keyboard that seemed to be blasted by reviewers as a piece of junk are all full of crap and that's just my intro. 

I purchased 2 of these keyboards when BestBuy put them out on the discontinued price list or $34.xx. 

The reviews all said it couldn't hold a charge. 

These people I found after testing are all wet behind the ears. 

This keyboard will charge off of anything you and see really. 

I took a single LED and it's 25lm on the software scale not a rapid charge but not fully discharging. 

If you have an office with a window you're good to go. 

If you have an office with at least 15 watts of light over your keyboard you're also good. 

The key is to allow light to hit the top of your keyboard. 

I would set the keyboard on top of the desk to charge while I was away from a CFL 15W bulb. 

My Gal puts her's in the drawer at night but has a 60 Watt in the room that does the trick. 

Over 3 years... !!!

Over 3 Years (I had to repeat that)

It's a great soft touch and the fact I haven't had to change batteries in over 3 years is great. 

I have 10 batteries that I cycle with only my mouse now. 

Programming takes allot of keyboard and mouse time which is why I have so many backup batteries. 

I work in a very poorly lit room so I have 3 LED's taped up under my desk to shine on the keyboard drawer when I'm not using it. I've been able to keep my keyboard at 98% charge with 3 small 12vdc LED's in complete darkness (aside from the LED's)

If you really want a great balanced keyboard that only needs a little light to keep it moving this is your best bet. 

Have fun!

Logi Tech _K750_Solar _Keyboard

The image above is how it looks when I'm working, I never moved the LED's with my keyboard so depending on how I am typing that day it can range from 50 to 180.

That's what you get when you "Rethink Re-Engineer Renewable" 99% charged on a LED that cost less than one battery and runs from the 12vdc hard drive slot in my workstation. 

I'll post up in a couple more years how it's doing but so far you can't beat that closeout discontinued sale of $34.xx BestBuy had. 

This is what charge I get from the LED's when the keyboard has one side under the light.

Logi Tech _K750_Solar _Keyboard _2

This is also when I am not using the keyboard, going for coffee, lunch and those times the system is on.

Here's the LED setup, the picture showing the exposed LED is how I tested to see if it was going to work for me. The final product is a fully sealed LED that can take allot of abuse. I needed to make sure I could stand on it, roll the chair over it and have a battery (SLA) crush it.

Not that I plan on anything like that happening but I worked remote locations for too many years not to take the added steps and make it damage proof. Did I say it's water proof? 

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I've been working with this brand of LED for over a year, it's what you see over at Truck and Tools what I did to the front of the house. 

The Truck and Tools link to the LED on a house is from my Rethinking Re-Engineering Renewable which in this case draws power from the output stage 3 of a UPS unit. It provides enough power that you can leave the lights on 10 days before the voltage drops below 12.59 which for your UPS is low. 

 

 

 

I read reviewers saying this keyboard was bad only because it wouldn't charge. It doesn't have a secondary method to charge and people hated it because it was dead after hours. This is what I read. What I found was completely opposite and proves once again some people need not post reviews until they learn Solar products can not charge in Total Darkness. But one little 15 W bulb or a LED does the trick and has done so for 3 + years.