Out of curiosity, how many kilometers can you do on a normal day?
I used to do around 15miles (23km) on average when I had a german shephard dog. But average in summer. Less distance in winter. That was because I topped up halfway through the day. Because realistically a set of lead batteries isnt capable of doing this. But its not about
miles. The state of charge of a battery depends on load. And load varies depending on a great number of things.
For e.g it takes 100 battery amps to turn in place in a rear drive powerchair. It only takes around 10A to 15A to roll at full speed.
So that if I spend 1 hour at home with a leaf blower clearing leaves in my driveway, garden I could use up a full charge. And covered maybe half a mile...
Same indoors vacuum cleaning for e.g. That left/right repeated movement uses 6x as much power! And you go nowhere.
So its not about "range" or distance. Its about load.
What else determines load? Tyre type and pressures. Solid "flat free" tyres have higher rollig resistance compared to normally inflated pneumatic tyres. But most of my chairs have larger tyres which are inflated to low pressures to give a smoother ride. That means that it doesent set off my muscle spasm and cause tension and problems as I roll over our terrible pavements. What else causes high loads? User weight. CG position. Carpets or grass. Hills. And extreme loads are caused by a lateral slope used to help roads drain that slope left/right or right left. All these things can reduce a chairs range from say the claimed 20 miles to 3 or 5 instead. And temperature... Colder days = less range. So as I said, theres no such thing as how many miles or kilometers range you can do. The answer is it depends on many things.
Are you still using gel batteries? How many charging cycles will the batteries last in optimal conditions, charging them correctly for 300 cycles according to the graph?
I have 6 powerchairs. I have lithium batteries in 3 of these going back 15 years now!
I have ODYSSEY AGM lead batteries in a couple. Because gel batteries cannot provide the current or torque that my programming demands from them. These are much lower impedance, meaning they charge faster, perform better. Most normal people wouldnt detect the difference. But I only use lead in 3 of my 6 chairs. I have one with a set of gel batteries (these are 80Ah gels, so are charged the same way as the MKs, and the SAME SPEC as MK but slightly arger capacity but are in fact HAZE GEL 80Ah.
I would encourage you to post a post telling what is the correct way to charge the batteries and what to use to do so.
Approximately 1/5th of all the posts on this forum going back decades do exactly this!
Again only yesterday...
https://www.wheelchairdriver.com/board/ ... =2&t=12249Theres no easy one size fits all answer.
I use my 4 bench power supplies to do a top up during the day to inrease range, and to make the battery last a lot lot longer. Set to 14.7V (29.4V) and 40A for AGM batteries. And set to 25A to 40A and 14.1V (28.8V) for gel batteries. This needs an anderson connector. If charging via the XLR port (I dont generally as its too slow) the same voltage but 12A maximum! You can use a mobility charger for that.
For a full overnight charge I use a 10A modified mobility charger to give me 28.8V and 27.0V float via XLR for gel. And an unmodified one for AGM. But these are crap.
I normally use the 3 stage charger from Shirley programmed to give me the same 28.2V (gel) and 29.4V (AGM) and set to stop CV stage at 0.2A and go to a 27V float. At 25A Gel, at 50A AGM.
I also frequiently use the same ZXD power supply to run the PL8 charger to charge Gel properly, same settings 25 to 40A or 12A via XLR port but with 8 hour CV limit, and no float. I use the same charger to discharge ad test and measure the battery capacity to determine its condition periodically too.
How many charging cycles will the batteries last in optimal conditions, charging them correctly for 300 cycles according to the graph?
Not sure I undertand that question.