Welcome to VisBis
VisBis is the subsidiary of Luminatek company in the business of helping other companies develop products. Our engineers have many years of experience in a wide variety of fields. We now concentrate on helping other companies engineer their power needs--batteries, power supplies, inverters and D.C. to D.C. converters.
We not only engineer products, but
we also manufacture products both in Utah and in China. This helps our
customers and keeps us in lasting, long term relationships with both our
customers and our factories. We are truing to be cost effective and sell our products to smallest mark up. Very often we modify our existing products to your needs. For our buyers from North America, please go to Powerstream website.
News/Info
Failed Lithium battery, can we fix it?
This article is not about resurrecting Li-po cells, but rather how to substitute failed battery with a new one.
Current and capacitors, calculator
This calculator helps to compute current limiting capacitor for low frequency (below 60Hz) AC sources of voltage.
Battery run-time calculator for Li batteries
This is a simplified run-time calculator to estimate the run-time of your loads for Li batteries. You need to know: a. Battery capacity in mAh (mili Amp hours) b. Load currents in mA.Please note 1Ah=1000mAh and 1A=1000mA. So if you have large car battery with 20Ah capacity, then put 20000 (mAh) as a number.
