YiHi SX Mini Q Mini dual battery mod

YiHi SX Mini Q Mini

This week I am taking a look at the YiHi SX Mini Q Mini, a temperature controlled dual battery device from YiHi.

YiHi SX Mini Q Mini

The new YiHi SX Mini Q Mini comes in the newer vinyl effect case (the same as the Q Class did).

YiHi SX Mini Q MiniYiHi SX Mini Q MiniYiHi SX Mini Q Mini

Opening up the box we find our new device.
In the bottom we have our new YiHi SX Mini Q Mini and a box with a USB cable in it, in the top there is an envelope with our documentation in it.

YiHi SX Mini Q MiniYiHi SX Mini Q MiniYiHi SX Mini Q MiniYiHi SX Mini Q Mini

The envelope contains a warranty card (with your unique serial number on it) and an extensive doubled sided user guide.

YiHi SX Mini Q MiniYiHi SX Mini Q Mini

The USB cable is the new braided and branded version, with a reusable Velcro strap for storage.

YiHi SX Mini Q Mini

And here we have the new YiHi SX Mini Q Mini.

YiHi SX Mini Q Mini

The YiHi SX Mini Q Mini has basically the same styling as all the SX Mini devices before it. Similar curves and contours.
It is however greatly refined compared to earlier models and has a couple of changes, such as the small metal pieces on the sides.

YiHi SX Mini Q Mini

The back edge still has the distinctive SX Mini logo ‘cut out’, useful for easing off the battery cover.

YiHi SX Mini Q Mini

The bottom of the device has the device info and serial number.

YiHi SX Mini Q Mini

The top edge has a nice little coutour next to the 510 connector.

YiHi SX Mini Q Mini YiHi SX Mini Q Mini

Buttons are still neat, metallic and clicky in their action.
There is the USB port under the up/down buttons for charging and firmware upgrades.

YiHi SX Mini Q Mini

The 510 is a 25mm diameter on the YiHi SX Mini Q Mini, as with previous SX Mini models the positive pin is brass and spring loaded to avoid the need to adjust for your atomisers.

YiHi SX Mini Q Mini

Unlike the SX Mini Q Class, the YiHi SX Mini Q Mini only has one side panel that can be removed.

YiHi SX Mini Q Mini YiHi SX Mini Q Mini

The battery cover is held in place by two neodymium magnets and two location pins on the bottom of the cover.
The small stainless steel panels on the outside acts as slots in the main body for venting.

YiHi SX Mini Q Mini YiHi SX Mini Q Mini

And another two magnets and one location pin on the top of the cover.

YiHi SX Mini Q Mini YiHi SX Mini Q Mini

The battery terminals are brass and neatly labelled with polarity to ensure correct battery orientation.
The top terminals are fixed and the bottom terminals are sprung to allow easier battery insertion and to adjust for differences in 18650 battery lengths.

YiHi SX Mini Q Mini YiHi SX Mini Q Mini YiHi SX Mini Q Mini

The YiHi SX Mini Q Mini display is much the same as previous SX Mini devices, with the exception of the SX450BT chip identity during startup.
The main status display is also the same.
Menus are similar as well, only the addition of a couple of extra items to deal with Bluetooth connections are added and otherwise its is the same as the ML and Q Classes.

On the subject of Bluetooth, that is the major difference between the electronics of the YiHi SX Mini Q Mini and its predecessor (the Q Class).
The YiHi SX Mini Q Mini can still be setup via the menus or the USB cable (and PC app). However it can now be pair with your phone/tablet via Bluetooth and setup that way as well.

To pair the YiHi SX Mini Q Mini you must turn on Bluetooth in the menu and then pair the device by selecting the Device Pair menu item and holding fire for 5 seconds.

YiHi SX Mini Q Mini

You can then use the app (which you need to install on your phone/tablet) to connect the app and device together.

YiHi SX Mini Q Mini

Once connected you can use the apps main menu to setup and tweak your device.

YiHi SX Mini Q Mini

On the menu for the device you will have a choice of 5 independent configurations you can change.

YiHi SX Mini Q Mini YiHi SX Mini Q Mini YiHi SX Mini Q Mini

Inside each config there is a host of options you can tweak.
There is a neat video on the Bluetooth pairing and app from YiHi here

The YiHi SX Mini Q Mini specs are as follows…

Powered by the YiHi SX450J-BT chip
Dual 18650 battery device
Variable Joule support for SS, Ti,Ni, SX Pure and user definable wires for temperature control
16bits DAC to sample the resistance
Bluetooth control, adjust all settings by phone/tablet app

Output 10-120 Joules 100-300°C (212-572°F) in Joule mode
Output 10-200 Watts in Power mode
Resistance: 0.05-0.3 ohms (Joule mode)
Resistance: 0.05 ohm – 3.0 ohm (Power mode)
Output Voltage: 1.0 – 9.5 Volts

Output power curve modes: Powerful+, Powerful, Standard, Soft, Eco & User definable SXi-Q S1 to S5.

Buck & Boost DC-DC Converter.

USB Balance charger on board (5V/2A)

Rotary display (Left or Right).

Upgradable firmware. Graphic user interface.

Reverse Polarity, output short, low resistance, low battery voltage, overheat & battery over charge protection.

As for sizes, Yihi has a nice picture here that shows the size compared to the Q Class

YiHi SX Mini Q Mini

So, opinions…

The YiHi SX Mini Q Mini is an update to the earlier Q Class model, it has basically the same specs and features but adds Bluetooth control and has slightly smaller dimensions. It also weighs a little bit less. Other than that the changes are aesthetic.

It continues the new lighter materials that we first saw in the Q Class, definately a great step forward for the series.

It works well and is still the best performing (in my opinion) temperature control device on the market at this time.

I would truly love to see a single battery (ML Mini if you will) with this level of materials used.

I have loved all the YiHi box mods, and this one is no different. I can’t really fault it on anything.
If I had to find a fault I would have to say the phone app could use a little maturing. That said it is new and YiHi have a solid track record for updating firmwares so we can expect the app to see great improvements as well.

Well done YiHi on yet another great product.

The SX Mini Q Mini retails for 199 S and € or £169

As always you can get more information (including user guides in PDF and any available firmware updates from the YiHi SX Mini website.
1-1416275496

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