Want this question answered?
First of all a pacemaker is a combination of two parts: the generator which contains the battery and logic, as well as the leads which connect to the heart. The batteries are not 'recharged'. When a pacemaker's battery is nearing the end of it's life (roughly 5-8 years) the patient schedules surgery, where the generator but not the leads are completely replaced. This isn't as drastic as it sounds and not usually as complicated as the initial fitting of a pacemaker. This operation is sometimes colloquially called 'recharging' but in reality the entire generator (battery and all) is replaced with a new one while the old is discarded.
It could be that the batteries are getting old and need to be replaced.
because they run out of energy
Generator and the batteries it charges.
It doesn't use batteries, there is a little generator type thing on the front wheel that tells the rear when to shift.
The batteries may not be in correctly.
batteries need to be replaced
Most of the material is recycled.
Correct new and used batteries should not be mixed together due to reduced life span and other potential hazards from mixing. Batteries when being replaced should always be replaced with new batteries of the same size and brand if possible.
Generator (mechanical device), batteries (chemical device).
If the fan/heater is heating as well as fanning, then the generator can't even support that alone, never mind the batteries. The generator is rated 1,000 watts, and the fan/heater wants 2 KW = 2,000 watts to fan and heat. That's 100% overload on the poor generator. The generator will complain, and the heater will be barely warm.
As a chain this would work, but generators and batteries are not 100% efficient, so you will lose energy at each step. Subsequent batteries and generators along the chain will become less powerful as the energy dissipates.