Surefoot WINTERHEAT 1300 User manual

INSTRUCTIONS FOR USE / ENGLISH
Table of Contents:
Introduction 6
Package contents 7
Safety precautions 7
Device description 8
Technical specifications 9
First use and charging of the Winterheat battery
9
Safety functions 10
How to use the Winterheat batteries
10
Important instructions for use 10
Function description 11
Heat level –heating period 12
Winterheat Bluetoothsynchronization 12
Maintenance, storage and care
Of the Winterheat battery 12
Disposal 13
Accessories and spare parts 13
Guarantee 14
STORAGE AND CARE OF LITHIUM-ION BATTERIES
Charge fully prior to each use.
Storage:
1. Before storing the batteries, discharge them and
charge the again (see instruction manual) - DON’T
FULLY CHARGE.
2. Turn off C - Pack battery and disconnect them from the
charger and insole
3. Store in a cool, dry environment at 5C/41F to
20C/68F
4. Avoid longer periods of non-use. If the storage
exceeds a longer period, repeat the procedure of
discharging the batteries and charging them halfway
again every 6 months!
The proper storage of your battery will help to maximize
its life and strength. For more information, please read
the operating instructions!
INTRODUCTION
Congratulations on your purchase of a Winterheat battery.
Please read the instructions for use carefully before operating
the device.
Please retain these instructions and pass them on to other
users. The Winterheat battery supply energy for the Surefoot
heated insoles.

INSTRUCTIONS FOR USE / ENGLISH
PACKAGE CONTENTS
Please verify the exact model name of your Winterheat
battery.
WINTERHEAT 3400 Bluetooth
2 WINTERHEAT 3400 Bluetooth(rechargeable)
1 USB charger cable Surefoot Winterheat
Free Bluetoothapp: Only available on Android and iOS
systems. Please download installed your Android app or
iOS app, and follow instruction in the app.
SAFETY PRECAUTIONS
General safety precautions:
This device is not intended for use by persons (including
children) with limited physical, sensory or mental abilities
or without adequate experience and/or knowledge,
unless they are supervised by or receive instructions on
how to use the device from a person in charge of their
safety.
Children should be supervised to make sure that they are
not using the device as a toy.
If you have problems sensing hot or cold objects (e.g.
diabetics, disabled persons etc.), please consult your
doctor before using the unit.
Check your feet regularly for reddening of the skin.
Excessive heat levels over prolonged periods of the time
can lead to burns. Children may use the unit only under
the supervision of adults.

INSTRUCTIONS FOR USE / ENGLISH
•Cleaning and user maintenance shall not be made by
children without supervision.
•It must only be supplied at SELV.
•The device may not be used to warm animals.
IMPORTANT: For recharging, only use the supplied USB
Surefoot charging cable. Charging is optimized using
Surefoot DC switching adaptor 5V/2A. It is designed for
indoor use and may not be exposed to damp
surroundings.
•Never try to open the battery packs! Improper handling
of the lithium-ion batteries can lead to an explosion!
•Damaged batteries must no longer be used and must
be disposed of immediately.
•If damage to charging cables or other parts of the unit
is found, do not use the unit. Do not make any
modifications to the unit or use it for any unintended
purposes. Always have any repairs to the battery packs
carried out by the manufacturing only. Damaged
chargers or charging cables cannot be repaired. Dispose
of the charger in accordance with local regulations at a
collection site for electrical waste.
•If questions or problems arise, please contact Surefoot.
•Do not throw Winterheat battery into an open fire, as
there is a risk explosion.
DEVICE DESCRIPTION
Winterheat battery
•Snap fasteners for connection to the charging station
and the heated insole connector (1.1)
Heat setting display 1 / 2 / 3 (1.2)
•Control button (1.3) (Instructions for use p3)
•Metal attachment hook (1.4)
•Charging trap (1.5). Pull the clip to access to charging
connector
•Charge indicator light (1.6)
•Charger cord with Winterheat plug (1.7)
•USB connector (1.8)

INSTRUCTIONS FOR USE / ENGLISH
TECHNICAL SPECIFICATIONS
USB charger
cable Surefoot**
Input: 5V
Max. 2000 mA
Output:
4.2V / 2000 mA
Winterheat
3400
Ouput : 3.7 V/
3400 mAh
*Optional accessory from Surefoot
**available in Surefoot retail locations
FIRST USE AND CHARGING OF THE Winterheat
BATTERY
Important note:
The Winterheat battery must be charged before using
them for the first time.
Preparing a USB power supply. Slide your adapter into
the slot on the back of the charger until it locks in with an
audible click.
USB cable charging process:
1. Please ensure that the Winterheat is switch OFF while
charging.
2. Plug the USB cable into the USB port. The charge
indicator (1.6) will light up red. Lift up metal clip to access
to charging trap. Next, you plug the charging connectors
of the cable into the batteries (1.5 –1.7). The charging
process will start automatically and the charge indicator
(1.6) will light up in red during charging.
3. Once the Winterheat batteries are fully charged, the
charging process is automatically concluded and the LED
on the charge indicator (1.6) will switch back to green.
4. Remove both Winterheat batteries from the charging
connectors.
Important note:
•Recharge the Winterheat battery after each use. This
extends the service life of the batteries and ensures that
the device is always ready for use.
•The battery consists of lithium ion cells and can be
charged in any state. For this reason, the battery does
not need to be fully discharged before charging.

INSTRUCTIONS FOR USE / ENGLISH
•When starting the charging process, the Winterheat
battery should be in POWER OFF mode.
•The full charging capacity of the Winterheat batteries
can only be conserved if the Winterheat batteries are
removed from the charging station after the charging
station after the charging procedure is complete.
Charging times
Battery
Winterheat 3400
Charging time
8h00
Note that at half time of the charging time mentioned on
table above, the battery is already charged at around
75% of its maximum capacity (fast charging process).
Lab test done using Surefoot USB wall plug universal
charger.
SAFETY FUNCTIONS
•Short circuit protection: if a short circuit occurs on the
connector or heating element, the integrated electronic
circuit switches of the Winterheat battery. After removal
of the short circuit and brief insertion into the charging
shaft, the Winterheat battery is ready for use again.
•Protection against overcharging and exhaustive
discharge: The Winterheat battery is protected against
overcharging and exhaustive discharge by the integral
electronic circuit during use.
HOW TO USE THE WINTERHEAT BATTERY
•When using the WINTERHEAT, connect the cord from
the heated insole firmly to the WINTERHEAT.
•The Winterheat battery can be controlled with button
(1.3) or with a iOS and Android app (only for Winterheat
Bluetoothenabled).
IMPORTANT INSTRUCTIONS FOR USE
•Do not allow the highest heat level to be switched on for
more than a few minutes at a time. This could produce
too much heat during operation, which may cause burns.
•Always set Winterheat battery to low or moderate heat
levels to maintain comfortable foot warming (heating
should be almost undetectable).

INSTRUCTIONS FOR USE / ENGLISH
•The optimum heat output is only reached when the
socks, boots or soles are dry.
•Never used the heatable sock and the heatable insole
together; this can result in too much heat risk of burning!
FUNCTION DESCRIPTION
Winterheat without Bluetooth
The Winterheat battery have a 4 operating modes:
POWER OFF –IN USE LEVELS 1-2-3. They are
indicated with the heating level display on the Winterheat
battery. The LED flashing modes corresponds to the
selected heat setting.
WINTERHEAT with Bluetooth
Using the phone App: Please refer to the Bluetoothapp
Turning the device on:
Press the control button (1.3) for a long period of time
(approx. 3 sec) to turn on the Winterheat battery at the
lowest heat level. If the control button is pressed for too
long period of time (approx. more than 6s), the
Winterheat will remain OFF mode.
Turning the device off:
•Press the control button for a longer period of time (3
seconds) (1.3) to turn off the Winterheat battery.
•The Winterheat battery switches into POWER OFF
mode.
•No LED is illuminated on the heat setting display (1.2).
•The heat is off.
Changing the heat setting:
•Press the control button briefly (approx.1s) to switch to
next heat settings (Level1, Level2, Level3, Level1…)
•Level1: A Flash, lower heat settings.
•Level2: 2 flashes, moderate heat settings.

INSTRUCTIONS FOR USE / ENGLISH
HEAT LEVEL –HEATING PERIOD
The following table shows the heating period for the heat
levels, which can be set using the control buttons.
Heat level
Winterheat 1300
Winterheat 3400
1
11-13 hrs
15-17 hrs
2
5-7 hrs
7-9 hrs
3
3-4 hrs
4-5 hrs
The heating period per charge depends on the selected
heating level, the ambient temperature and the charging
status as well as the age of the batteries.
Therefore heating times are provided for information only
and are not contractual.
WINTERHEAT BLUETOOTHSYNCHRONIZATION
Free Bluetoothapp: Only available on Android and iOS
systems.
MAINTENANCE STORAGE AND CARE OF THE
WINTERHEAT BATTERY
To ensure a long life, we recommend storing the
Winterheat battery in a cool room (at temperatures
ranging from 5C / 41F to 20C / 68F) in a semi-
charged status.
The Winterheat battery must be turned off (heat setting
display (1.2) dark) and disconnected from the insoles and
charger for storage.
For long-term storage, the Winterheat battery must be
discharged and recharged half at least every 6 months
(Charge for about 1/3rd of the time indicated on the
charging time table).
This ensures that the maximum battery power is
preserved for many years!
Cleaned the parts as needed with a soft, slightly damp
cloth and a mild detergent.
Caution:
Always remove the charger from the outlet before
cleaning it.

INSTRUCTIONS FOR USE / ENGLISH
DISPOSAL
•If the device can no longer be used, pleased disposed
of it and its packaging in an environmentally-friendly way
that is in accordance with current regulations.
•Do not throw the charger or the battery packs away with
normal household trash. Instead, dispose of the parts at
a collection site for electrical waste.
•Packaging materials are raw materials and can be
recycled. For this reason, please recycle that packaging.
•Battery packs must be disposed of at intended
collection sites.
•Please contact your local authority for more information.
ACCESSORIES AND SPARE PARTS
When subsequently purchasing accessories or spare
parts, please make to provide the exact Surefoot model
designation. Ideally, take the part to be replaced with you
to your dealer.
We offer a number of accessories. All items (accessories
and spare parts) are also available individually. More
information can be found at www.Surefoot.com
This product complies with the relevant regulations and
guidelines.
GUARANTEE
As the manufacturer we guarantee for this product for a
period of one year after the date of purchase. Within this
guarantee period we will remedy any defects arising from
faulty material or manufacture, free of charge, either by
repairing or exchanging the device at our discretion.
The following are not included in the guarantee:
Damage caused by improper use; normal wear and tear
with only minor impact on the value or usability of the
device.
The guarantee becomes null and void if the device is
tampered with by unauthorized bodies, or where other
than original SUREFOOT spare parts are used.
Information subject change.

FCCCaution
Thisdevice complieswithpart15 oftheFCCRules. Operation issubjecttothe
followingtwoconditions:(1)Thisdevice maynotcauseharmfulinterference,and (2)
thisdevice mustacceptanyinterferencereceived, including interferencethatmay
causeundesired operation.
AnyChangesormodifications notexpresslyapprovedbythepartyresponsiblefor
compliance could void theuser's authorityto operatetheequipment.
Note: Thisequipmenthasbeentestedand foundtocomplywiththelimitsforaClass
Bdigitaldevice,pursuanttopart15 oftheFCCRules. Theselimitsare designedto
providereasonableprotection againstharmfulinterferenceinaresidentialinstallation.
Thisequipmentgeneratesusesand canradiateradiofrequencyenergyand, ifnot
installedand usedinaccordancewiththeinstructions, maycauseharmfulinterference
toradiocommunications. However,there isno guaranteethatinterference will not
occurinaparticular installation. Ifthisequipmentdoescauseharmfulinterferenceto
radioortelevision reception, whichcanbedeterminedbyturning theequipmentoff
and on, theuser isencouragedtotrytocorrecttheinterferencebyoneormore ofthe
followingmeasures:
-Reorientorrelocatethereceivingantenna.
-Increasetheseparation between theequipmentand receiver.
-Connecttheequipmentintoanoutleton acircuit differentfromthattowhichthe
receiver is connected.
-Consult thedealer oranexperienced radio/TVtechnician forhelp.
Thedevice has been evaluated to meetgeneralRF exposure requirement.Thedevice
can beused in portableexposure condition withoutrestriction.