HP 15C CE ships with mediocre batteries

[RPNerd]

(11-28-2024 01:29 PM)AnnoyedOne Wrote:  PS: I don't think that the HP-15C CE/12C+ have any large capacitor across the supply rail. Batteries removed = data loss every time. That saves the cost of a component! Maximise profit and your users can go...

In defence of manufacturers, there's also an element of wanting to avoid problems. Some caps can be leaky, even ceramic caps of a large enough capacity. Back in the early days of the DM42, a batch went out with leaky surface mount caps decoupling one of the 3V rails causing unnecessarily high battery drain. I had to replace that part in one of mine and did so for a few others' machines too.