Whether the end user is satisfied with the design of his portable device depends largely on the performance of the battery.
The key indicator of the battery is of course the life of the battery. On the surface, this is a simple specification, but it involves many factors, including: system load characteristics (time at full load current, partial current and microampere current), power efficiency, system power management , battery type and charging method.
In addition to the importance of the above properties themselves, the interaction between these features will enhance or diminish the end user's perception. In general, when users start to notice the presence of the battery, things become more difficult! A good product design does not require frequent battery replacement (such as a TV remote control), nor does it require frequent charging of the battery (such as an electric toothbrush), causing the battery to "disappear" from the user's eyes. Avoid users paying attention to the battery as much as paying attention to the function of the device.
Select the chemistry of the battery
The mutual constraint between the battery and the system is a problem that is often overlooked in product design. It is critical to ensure that the battery capacity matches the requirements of the system. The most common types of batteries used in portable electronic devices are: alkaline batteries, nickel-metal hydride batteries (NiMH), and lithium ion (Li+) batteries. They are not interchangeable, and most products have an optimal solution.
Disposable battery: alkaline battery
Alkaline batteries are non-rechargeable batteries (this has been repeatedly emphasized in recent evening TV commercials), but they have certain advantages due to their extremely low self-discharge rate and cost (there are no chargers or AC outlets for this type of battery). For low-power applications, alkaline batteries will be a good choice, but such batteries must be used reasonably, and the quiescent current or sleep current must be low.
A common misunderstanding in design is that it only pays attention to work efficiency, and ignores the current loss in the "off" or "sleep" state. Even a few tens of microamps of current consumes battery power, so even the product will work intermittently. Causes frequent replacement of the battery. Unfortunately, because many of today's designs replace mechanical switches with soft switches (mechanical switches can completely disconnect the battery), this design misunderstanding is more common than it was a few years ago.
Rechargeable battery: NiMH and Li+ batteries
Rechargeable batteries are a good choice when the load is too large for alkaline batteries or when batteries need to be replaced frequently, which has become the standard mode for portable products such as notebook computers, PDAs and cell phones. Rechargeable batteries should "disturb" users as little as possible, and should choose a battery that promotes the product (at least not affecting product performance).
There are two commonly used rechargeable batteries: NiMH batteries and Li+ batteries.
The cost of a NiMH battery is lower than that of a Li+ battery. If the normal use of the product is safe for the battery, the battery can be selected. This problem is more important for low cost products that lack complex charging designs because NiMH batteries are suitable for processes that are fully charged and fully discharged. This is suitable for products that often exhaust power completely, such as power tools. However, a new type of NiMH battery with a low self-discharge rate and a negligible memory effect has recently appeared on the market, called “mixed NiMH batteryâ€, which stands for Eneloop of SANYO® and Hybrio® of Uniross®. This type of NiMH battery has a longer hold time than a conventional NiMH battery, typically losing only 15% of its electricity in a year. The low self-discharge rate makes the hybrid NiMH battery ideal for replacing alkaline batteries in applications where the battery is depleted and removed from the device and charged with an external charger. These applications are common in digital cameras, but still require user intervention.
Many portable products are different from the above. PDAs and cellular phones need to be recharged regularly, but they only consume power occasionally. These products are best used with Li+ batteries. In addition to a better power-to-weight ratio, Li+ batteries have two important advantages: low self-discharge rate and no limitation on short-time charge-discharge. Consumers don't have to think about "battery management" issues, and they rarely consider batteries in use, simplifying product use. Li+ batteries are especially suitable for products with batteries that consumers cannot replace.
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Important factors to consider when choosing a Window 7 Pos System:
Initial setup cost (time and money)
Payment processing costs (e.g., % of sale + charge per transaction)
Other monthly processing fees (e.g., PCI-compliance fee, chargeback fees)
Equipment costs/rental fees
Pos Software fees
PCI compliance (i.e., how you process payments, connect your systems, and manage customers` data securely)
Level of mobility
Ability to accept EMV chip cards
Ability to accept NFC payments like Apple Pay, Android Pay, and contactless cards
POS software features (e.g., invoices, ability to store customer data safely, inventory management, customer loyalty programs, appointment management)
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While you can take card payments using a standard credit card processor, there are a lot of benefits to using a small business Window 7 Pos System. For starters, every time you take a payment using a Window 7 Pos System, all the data from the sale is tracked and recorded in the system. This is key for inventory management, which a small business Window 7 Pos System helps you keep track of.
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