I think of lot of us that have been in the trenches for a few decades will disagree there. We call it "Putting on our "consulting hat"..and consulting the client.
Flip things around...do you go to the doctors office and demand what's good for you? Or...do you listen to some of your doctors advice and give it some thought? Do you design a house yourself? Or listen to the architect when they say some things just aren't practical? Do you demand things from the HVAC guy are aren't possible at some price point? Or take heed to their advice for "Well..this works better ...and will save you money in the long run".
We (supposed to) know our field/products/services. Sometimes letting a client know what is unrealistic...or not the best option...is (should be) part of our job. Right now I'm at a health care client with about 35 laptops in their fleet. Been doing their IT for over 20 years. Over a decade ago...yeah with those monster laptops, they had removable batteries and a drawer full of spares. But these days...with their ultra-book laptops that the nurses LOVE due to slim and very light weight and batteries that last over 10 hours of full run...there is no drawback to not having piles of batteries around to play hockey with. Battery quality has evolved and improved in recent years.
Just food for thought. 'course...they'll keep you on a long hunt for a unicorn.
That's being a little facetious. Anyone and everyone I hire works for me. At my last doctor's visit he recommended surgery. I said no. He said "Okay". That's how it works. He gives me advice, he does not tell me what I'm getting. I have no problem giving my customer advice. But I will not "sell them" something they are not asking for unless they change what they are asking for. That's why I have that walk-through scheduled for Thursday morning, tentatively.
And this isn't a hunt for a unicorn. You might have missed that I have been providing computers for them which have met ALL of those conditions for about 7 years now. I was looking for an alternative to Fujitsu (note, "I" was looking for the alternative, not the customer). I can get Fujitsu to meet all of those requirements, no problem. I just don't like them. But in the end I'm not selling the computers to me.
I understand that what you do works well for you and your customers and that's great. But your doctor's office is not this doctor's office. You know the needs of your customers, not mine. And while your solution MAY meet the needs of my customers there is no way whatsoever you can be certain about that when even I'm not certain and I've been selling them these systems for nearly a decade now.
Bottom line, the request wasn't unreasonable because I have met every one of those requirements in multiple purchases over 7 years now already. I was looking for an alternative to Fujitsu which met all the same requirements. It doesn't exist, which is the answer I should have gotten, not "Based on zero knowledge of your customer's needs or computer usage you should absolutely, without doubt sell them X and tell them it's better". I'm not Microsoft here. I don't tell customers what they want, I advise them and then do what I'm told, if I can possibly do it with a quality product and clear conscience.
Which reminds me of my favorite Windows Vista satire, which I came up with myself (to be fair, it was more a logical conclusion based on observation than satirical genius). When customers told Microsoft that they didn't like Windows Vista Microsoft's response was, "Yes you do. It's better."
I realize there are times when the customer's request is unreasonable. I lost my biggest client because I refused to keep their old XP systems running and cobble together old junk so the lady could avoid moving out of 1986 when the 2 DOS programs she wrote using BASIC felt like a major accomplishment. She wanted those DOS programs to keep working another 30 years and could not understand why things had to change. When I finally got her to change she was so infuriated that everything was different and her 20+ year old accounting software wouldn't install that she dropped me, and good riddance. I understand that there are times when meeting a customer's demands is actually bad for the customer. Removable batteries, that's not one of those requests.
I'm actually curious which Fujitsu you're thinking about for them. I'm not familiar with their lineup and without digging too much I didn't see anything that indicated replaceable batteries on any of the listings on their site. I think the most promising might be the Stylistic Q738 if it also has a supplemental battery in the keyboard base and you can purchase additional keyboard bases.
I'll admit that I'm a little burned out on Fujitsus based on a client that still has a bunch of underpowered Fujitsu tablets that were never certified to go to Windows 10 (was able to do it, but had to disable the touchscreen in Device Manager to prevent frequent ghost touches) but which needed drive encryption.
Edit: ah, never mind, I see the external battery charger accessory for the Lifebook P728
I hate Fujitsu so much. Slow, clunky, weird driver errors popping up out of the blue without warning or apparent fix, ugly. I'm hoping after Thursday's walk-through I will know enough about their needs and usage to be able to confidently recommend some Yoga model, or pretty much anything Lenovo. I just have to learn exactly what their needs are and why to be able to make an intelligent, informed recommendation, IF I think a product will work at least as well for them.
At least I don't have to worry about drive encryption. They have software which connects to a server and no patient information is allowed to go directly on the laptop ever.