Mosfet box mod

Mosfet Box Mod is an electric network, which consists of a supply equipment (storage battery), current consumer (atomizer) and a button which completes or separates circuit though the mosfet. Also as conductors we can use wires with different cuttings. To control separateness, voltmeter – a digital indication is set. In a majority of mechanical mods two or more storage batteries are used. But what for? A decisive value at low Ohms is given to charging current of an storage battery, as the lower resistance of a spiral, the higher possible charging current of the storage battery. A mechmod, which have two or more storage batteries, has several times higher charging current, because the termination splits up evenly among storage batteries, it means that for low Ohms it will be safer to use mechmod with several storage batteries, than with one. Mechmod can be as a box for two or more batteries. Of course, there exist a lot of form-factors.

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Case Material: Hybrid / Acrylic / Stubwood
Filling: serial / parallel connection (not adjustable)
Design: stylized case for Hexohm V3
Build version: 1.3
Description:
510 spring-loaded connector v4 (22mm) (recessed)
Battery compartment
Button from Hexohm
Hot swappable batteries
Switch
Clean look

Case Material: Silumin
Filling: serial / parallel connection (not adjustable)
Decoration: etching
Description:
510 spring-loaded connector
Battery compartment
Hot swappable batteries
Button
Gas Outlet Holes

Housing material: silumin (molding)
Filling: parallel-series connection (not adjustable)
Design: painting / fur engraving
Description:
2 * 510 spring-loaded connector 40mm
Rechargeable battery compartment for 26650/18650 batteries
Steel button 16 mm
Hot swappable batteries
Voltmeter

Case Material: Hybrid / Acrylic / Stubwood
Filling: parallel / serial connection (not adjustable)
Design: stylized case for Hexohm V3
Build version: 1.1
Description:
510 spring-loaded connector
Battery compartment
Button from Hexohm
Hot swappable batteries
Switch
Clean look

Housing material: ABS plastic
Filling: Serial connection in pairs
Design: stylized cutouts for connection marking and pictures on request
Description:
510 spring-loaded connector v3 (28mm)
Hot swappable batteries
Battery Compartment (x2)
MOSFET irlb3034, paired with a resistor at 15 Kohm
External diameter button 19mm

Housing material: brass / aluminum / copper (all-milled)
Filling: serial / parallel connection (not adjustable)
Design: polishing / fur engraving
Description:
510 spring-loaded connector
Battery compartment
Button
Hot swappable batteries
Parallel conjunction

Such type of conjunction allows to increase the highest possible discharging. For example, you use 30 A storage battery, but in mechanical box for two storage batteries you can count on 60 A, it means that the termination will distributed among them equally.

Also the capacity increases. For example, if you use two 2200 mA storage batteries, the general capacity will be 4400 mA, which cannot but please us.

We have to mention and one point of great nicety. Many people are aware, that a big contribution to the common voltage slump is made by storage battery slump (while using the mods with minimal slumps). As a rule, the less resistance is (the strain is heavier, because while resistance is decreasing the discharging increases), the more storage battery "settles" and gives fewer resistance. In this case the load divides among the storage battery, so slumps get smaller. You possibly have met not once just odd huge boxmods with 4 or more storage batteries. From the standpoint of ergonomics it's much uncomfortable (the size often really impreses), but slumps under parallel conjunction in such devices are really small. Let's determine minimal acceptable resistance for parallel conjunction, ignoring accumulation slumps under load: devide strain (4, 2 V) into highest discharging (2 storage batteries 30A+30A=60A) and we'll get 0, 07 Ohms. Further take the square of resistance divide into strain and get 252 W.
Series conjunction

During such conjunction neither discharging, nor capacity increases. Only resistance increases. For example, if you use 2 sharged 4.2 V storage batteries, the unladen strain will be 8.4 V. such high voltage is called high-volt. According to many misbeliefs high-volt of series attachment is able to output more capacity (Watt) than 4.2 V of series one. One would think it makes sense but you should remember: nothing comes out of the sack but what was in it.

Let's carry out simple calculations with few simplifications. Imagine that we have 2 boxmods with series and parallel resistance, in which slumps are absent. Also assume that we will sample off load (without screwing an atomizer, but just taking indices).

Take 4 "fresh" charged storage batteries with discharging of 30 A and voltage of 4, 2 V each. From the data, let's calculate the highest possible capacity for the both boxmods with different types of storage battery connection. For the series conjunction let's make the same manipulations: 8, 4 V divide into 30 A and get 0, 28 Ohms. With such resistance and 8,4 V voltage the capacity will be the same – 252 W.
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