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Hotronic has provided backwards compatibility in the new components to protect investment and enable you to benefit from the longer life and improved charging systems. Your current Hotronic elements can be used with the new batteries and chargers.
Component Compatible With
All Insoles (Old and New) Work with all (PowerPlus and prior) batteries
Pre-PowerPlus Batteries Pre-PowerPlus, Power Plus 2.5 and 2.7 and Power Plus Chargers
2.5 and 2.7 Batteries Charge only with the 2.5 or 2.7 Power Plus (red plug) or Power Plus chargers
3.5 Batteries Charge only with the 3.5 Power Plus (blue plug) charger
Pre-Power Plus Charger Use only with the Pre-Power Plus batteries
2.5 and 2.7 Power Plus (red plug) and Power Plus Chargers Use with the pre-Power Plus, Power Plus and 2.5 or 2.7 Power Plus batteries
3.5 Power Plus Charger (blue plug) Use ONLY with the 3.5 Power Plus batteries
So, to upgrade and take advantage of the longer battery life and better charging, you need to purchase new batteries and chargers. To do this, see the item below. If you are buying replacement items, unless you have usable batteries and charger that you are trying to match, it is recommended that you upgrade to the 3.5 units which have significantly more heating time and power. Return to Products

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