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

How efficient solar panels and can they power your electronic?

How efficient solar panels and can they power your electronic?

This material is giving examples of real solar powered devises and discussing how bad it is in reality!
 Calculator for Pmax solar panels with No Load Voltage (= Vos) and Short Circuit Current (Isc)

Calculator for Pmax solar panels with No Load Voltage (= Vos) and Short Circuit Current (Isc)

This is very simple calculator for wattage characterization of solar panels with No Load(Open Circuit) Voltage (= Vnl) and Short Circuit Current (Isc)
Оverview of Sodium-Ion (Na-ion) Batteries

Оverview of Sodium-Ion (Na-ion) Batteries

Оverview of Sodium-Ion (Na-ion) Batteries Provided as samples and comparison to Li-ions
Battery run-time calculator for Li batteries

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.

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