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May 7, 2011 · 'We have four charged batteries, four uncharged batteries and a radio that needs two charged batteries to work. We have no idea of which are charged and which are uncharged. a) What is the least number of attempts necessary to ascertain that the radio will work? An attempt consists on taking two batteries and putting them on the radio.
Nov 25, 2020 · 3 I know this question has been asked here a couple of times. We have four charged batteries, four uncharged batteries, and a radio which needs two charged batteries to work. We do not know which batteries are charged and which ones are uncharged. What is the least number of attempts that suffices to make sure the radio will work?
Aug 3, 2012 · The AA replacment unit’s charger is marked as 2.8V 360Ma X2 (it uses 2 channels to parallel charge 2X2 “AA” batteries for a set of 4) Why can’t I just make a physical adaptor plug so the batteries get the exact same time volktage/Ma rate but via the charge port?
Jul 22, 2008 · Maybe you would believe Adam and Jamie? (;->) There is no need to completely discharge NiCd batteries, nobody does, just pop them (or the radio) in the charger. The memory develops if the battery is left discharged or partially discharged for long periods, then it becomes impossible to charge beyond that point.
Sep 12, 2024 · A battery that won’t charge is a significant issue for two-way radios, as it directly impacts communication capabilities. When a battery fails to charge, it can lead to unexpected downtime, leaving users without a reliable means of contact during critical moments.
Jan 18, 2023 · Puzzle - Batteries you have these three groups in the first group make three attempts with three combinations, Three combinations of the 1st grp The worst-case scenario is that none of the combinations of the lights of the charge can happen only if the group has either two discharged batteries or all three discharged batteries but you must consider that it has two …
Nov 22, 2011 · Unsolved battery discharge problem An informal area for conversations, humor and observations that aren't necessarily strictly radio related. No discussion of politics or religion. Ads are not permitted.
Apr 10, 2012 · NIMh batteries usually tend to take more current during charging cycle than NIcd batteries. The adaptor which was meant to deliver 100Ma as mentioned, was forced to deliver more current which it coudnt. For charging the NIMH batteries you may construct a constant volatge charging circuit built arround LM317 or so and then connect the batteries,+ charger+ …
Leaving a battery in the charger after it is fully charged can diminish its capacity if done repeatedly. Some chargers, like IMPRES chargers from Motorola Solutions, are capable of providing a ‘maintenance charge’ which gets around this problem.
Jan 9, 2021 · Battery needs to be replaced if 30% of charge is lost in first 24 hours at rest Measured in Amp/Hours Accompanied by “C” rating “1C” is constant current draw level that will discharge battery from full to empty in 1 hour More typically found on Lithium batteries, but nearly all chemistries have a published “C” rating.
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