FAQs
lithium packs
1. How long do the various lithium packs last?
2. What is the difference between the lithium pack 700 and the lithium pack rcB 1200/rcB 1800?
3. Compatibility of Lenz lithium packs with Lenz products
4. Why does the LED on the lithium pack flash even though the lithium pack has been switched off?
6. How can the different lithium pack types be operated?
7. How do I know that my lithium pack is compatible with the Lenz heat app?
8. What should I do for long term storage?
9. How can I check if my lithium packs are half charged?
10. For which purpose the rubber rings are attached to the packaging?
heat socks / soles / gloves / vests / bandages / LED system
1. How does the heat socks work?
2. Where do the heated socks dispurse heat?
3. What is the difference between the 1.0 (slim fit), 3.0 and 5.0 toe cap® heated socks?
4. How does the heat vest/heat bandage work?
5. How do the heat gloves work?
6. How does the LED system 1.0 work?
7. How is the sizing of heat socks / vests / soles / gloves?
8. Washing Instructions (heat socks, heat vest/heat bandage, heat gloves)
dry & hygiene
1. Can I operate the space dryer without supervision?
lithium packs
1. How long do the various lithium packs last?
See the heat settings overview on our Lenz heat app page.
2. What is the difference between the lithium pack 700 and the lithium pack rcB 1200/rcB 1800?
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lithium pack 700:
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lithium pack rcB 1200/
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3. Compatibility of Lenz lithium packs with Lenz products
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Lenz heat socks |
lithium pack 700 |
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Lenz heat vest/heat bandage |
lithium pack rcB 1200 |
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Lenz heat sole |
lithium pack insole 1000 |
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Lenz heat gloves |
Battery Pack Glove Type 2 |
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LED system |
lithium pack 1200 |
4. Why does the LED on the lithium pack flash even though the lithium pack has been switched off?
When the middle LED flashes (every 2-3 sec.) this signalizes that your lithium pack is in stand-by mode. The switch off time depends on the lithium pack generation. Please read the manual carefully or consider the graphics underneath. The lithium pack rcB has an automatic shutdown function that switches the lithium pack to POWER-OFF mode. The lithium pack rcB switches off automatically (POWER-OFF) when the lithium pack rcB is switched to a heating level (1, 2 or 3) but no heat sock/vest/bandage is attached or when the battery is in stand-by mode (middle LED flashes) and no heat sock/vest/bandage is attached.
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lithium pack rcB 1200 / rcB 1800 |
lithium pack rcB 1200 / rcB 1800 |
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left press button is red framed |
left and middle press button are red framed |
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shutdown time: 10 minutes |
shutdown time: 12 hours |
lithium pack insole rcB 1200: The lithium pack insole rcB 1200 also has an automatic shutdown function when no sole is attached.
5. What can I do if the lithium pack does not change from the Stand-By Mode to the Power-Off mode and keeps flashing?
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Make sure that no heat sock/vest/bandage or charger is connected to the lithium pack.
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Make sure that the Lenz heat app is closed completely at your smartphone and that there is no existing connection to the lithium packs via Bluetooth.
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Make sure that the lithium packs have no active connection to or with Bluetooth compatible devices (BLE devices) at the immediate area.
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Press the power button on the lithium pack and switch the lithium packs to Stand-By Mode.
6. How can the different lithium pack types be operated?
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lithium pack 1200 |
lithium pack rcB 1200 / |
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7. How do I know that my lithium pack is compatible with the Lenz heat app?
Bluetooth-enabled lithium packs are marked with the "Bluetooth" icon on the front as well as "Bluetooth Smart" on the back.
8. What should I do for long term storage?
Please discharge the lithium packs and half charge (see user manual) – DO NOT FULL CHARGE! Turn off the lithium packs and store disconnected from the charger.
We recommend the lithium packs be discharge every 6 months and again half charged. Proper storage of lithium packs will increase their performance and lifetime.
9. How can I check if my lithium packs are half charged?
Fully discharged the lithium pack and charge them approximately 1-2 hours. With the rcB 1200/rcB 1800 lithium pack, the charge state can be checked at any time via the Lenz heat app.
10. For which purpose the rubber rings are attached to the packaging?
There are 3 x 2 pcs. of elastic rubber rings enclosed to every set of rcB 1200 / rcB 1800 lithium packs.
These coloured rubber rings will facilitate matching the battery pack, for example, should more friends / family members have the same lithium packs in use. In that case you can mark your battery packs with one color (f.e. yellow) and the other person with a different color (f.e. red).
The rubber rings can be fixed between the battery cell units.
Thus, there is no likelihood of confusion of the lithium packs, if the lithium packs had been paired already to the Lenz heat app.
heat socks / soles / gloves / vests / bandages / LED system
1. How does the heat socks work?
The heat socks are performance socks with a proportion of merino wool. The heating element is integrated/sewn in these socks. The lithium pack can be attached to the legband via press buttons. The legband can be turned over the lithium pack.
Heat can be regulated via 3 settings on the lithium pack, on the remote control or continuously via smartphone (lithium pack rcB 1200/1800).
2. Where do the heated socks dispurse heat?
The heating element of the 1.0 and 3.0 socks are located at the ball of the foot. After only a short time heat is dispursed to the entire sole of the foot.
At the heat socks 5.0 toe cap® the heating element incorporates the entire toe area, heating the toes from the top and the bottom. This results in an optimum heat chamber for a maximum feeling of cosy well-being.
3. What is the difference between the heat socks 1.0, heat socks 1.0 slim fit, heat socks 3.0 and heat socks 5.0 toe cap®?
The heat socks 1.0 have a shin protector and the heating element is located directly below the area of the toe and ball of the foot. Ideal for all outdoor activities.
The heat socks 1.0 slim fit have a deliberately more narrow fit in the area of the forefoot and also have a shin protector. The heat element is located directly beneath the area of the toe and the ball of the foot. Ideal for all outdoor activities.
The heat socks 3.0 unisex have a reduced volume and, available in black, they are the perfect companion for work and leisure. Available in green, they are the perfect socks for hunting and forestry purposes. The heat element is located directly beneath the area of the toe and the ball of the foot.
The heat socks 5.0 toe cap® have a shin protector and a heating element which contains the complete toe area. This means that the toes are heated from both the top and the bottom, and an optimum heat chamber is created. These heat socks 5.0 toe cap® are suitable for all outdoor activities, and are particularly suitable for wearing in tight-fitting and fitted (ski) shoes.
The heat socks 5.0 toe cap® slim fit have a shin protector and a heating element which contains the complete toe area. This means that the toes are heated from both the top and the bottom, and an optimum heat chamber is created. They have a deliberately more narrow fit in the area of the forefoot, and are specifically suitable for narrow feet. These heat socks 5.0 toe cap® are suitable for all outdoor activities, and are particularly suitable for wearing in tight-fitting and fitted (ski) shoes.
An overview with pictures can be found here: Overview
4. How does the heat vest/heat bandage work?
The lithium batteries of the heat vest can be fastened with press buttons at the inside of the vest on the left and right side. Heat is dispursed at the kidney and back area. Heat can be regulated via 3 settings on the lithium battery, on the remote control or continuously via smartphone (lithium pack rcB 1200/1800).
The lithium packs of the heat bandage can also be fastened with press buttons in a pocket at the front side of the bandage.
5. How do the heat gloves work?
The heat gloves have a pocket on the inner side of the wrist where the lithium packs are stowed. By means of a plug connection the lithium packs can be connected to the heat gloves, each finger is heated individually. 
6. How does the LED system 1.0 work?
Open the velcro fastener of the intended battery compartment. You can now see the connector plug for the integrated LED module.
Place the lithium pack in the intended battery pocket. Connect the LED module‘s connector plug to the battery with the press studs.
Close the flap of the velcro fastener.
Press the function key on the battery pack briefly to recall the various modes on the LED system 1.0. Pressing and holding down the function key on the lithium pack lets you dim the light in each mode in 4 different stages.
7. How is the sizing of heat socks / vests / soles / gloves?
The sizes of our heat products you find here
8. Washing Instructions (heat socks, heat vest/heat bandage, heat gloves)
heat socks:
- Wash at 30 C
- Do not hand wash
- Wash socks in the supplied wash bag
- Do not spin
- Do not tumble dry
- Do not boil
- Do not bleach
- Do not iron - Do not dry clean
- Remove Lithium packs before washing
heat vest/heat bandage:
- Wash at 30 C (delicate setting)
- Do not bleach - Do not tumble dry
- Do not iron
- Do not dry clean
- Close the zipper of the jacket before washing, close velcro of the heat bandage before washing
- Remove Lithium packs before washing
- Do not wring vest/bandage
heat glove:
- Heat gloves are not washable.
- For optimum drying, we recommend our space dryer dryer 1.0 or space dryer 2.0.
dry and hygiene
1. Can I operate the space dryer without supervision?
Our "dryer & warmer" products are CE certified (TÜV) and comply with all applicable European regulations and guidelines for safe use.
- Temperature control
- Overheating protection
- Space dryer 1.0 has an additional switch-off function (Timer -1h / 3h / 6h individually adjustable)
The safety details can be found in the respective user manual.
