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

Batteries-overvew (Part 6)

Batteries-overvew (Part 6)

There are many other battery chemistry, each with their own advantages and disadvantages. Also batteries classified under their shapes. In the last few years a few geometrical shapes became very popular.
Custom sized battery

Custom sized battery

We do make custom sized batteries.What do you need to know before you send us an email?
 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)
Battery Capacity calculator. Dermines battery capacity (C) in ampere-hours (Ah) for 2 (two) sequential discharge events.

Battery Capacity calculator. Dermines battery capacity (C) in ampere-hours (Ah) for 2 (two) sequential discharge events.

This calculator determines the total required battery capacity (C) in ampere-hours (Ah) for two sequential discharge events. It accounts for the load currents (I1, I2), discharge times (t1, t2), discharge rates (Rc1, Rc2), and includes corrections for non-linear effects in internal resistance at low states of charge (SoC).

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