What is the best RV & travel trailer battery for dry camping and boondocking? Camping has been a favorite American pastime for generations. Who doesn’t like a peaceful weekend away? Especially when you have a roomy travel trailer (or other RV) to stretch your legs in. Over the years camping […]
Read MoreThe C-rate is a unit to declare a current value which is used for estimating and/or designating the expected effective time of battery under variable charge or discharge condition. The charge and discharge current of a battery is measured in C-rate. Most of portable batteries are rated at 1C. This means that a 1000mAh battery would provide 1000mA for one hour if discharged at 1C rate. The same battery discharged at 0.5C would provide 500mA for two hours. At 2C, the 1000mAh battery would deliver 2000mA for 30 minutes. 1C is often referred to as a one-hour discharge; a 0.5C would be a two-hour, and a 0.1C a 10-hour discharge. The capacity of a battery is commonly measured with a battery analyzer. If the analyzer’s capacity readout is displayed in percentage of the nominal rating, 100% is shown if a 1000mAh battery can provide this current for one hour. If the battery only lasts for 30 minutes before cut-off, 50% will be displayed. A new battery sometimes provides more than 100% capacity.
Read MoreLithium ion batteries come in many variations. Advantages of the NCA are high specific power for exuberant acceleration and long life. The negatives are high cost and a lower safety margin than other Li-ion systems. Figure 2 outlines six of the most important characteristics of a battery in a spider […]
Read MoreLi-ion batteries come in many varieties but all have one thing in common — the catchword “lithium-ion.” Although strikingly similar at first glance, these batteries vary in performance, and it’s mostly the cathode material that gives then their unique personality.
Unless you are a chemist, the names of the materials in a lithium-ion battery can get confusing. This article provides clarity by listing six of the most common lithium-ion batteries and giving examples of typical uses. Their full chemical names and colloquial short names are summarized in Table
Read MoreIt was not until the early 1970’s that the first non-rechargeable lithium batteries became commercially available. Attempts to develop rechargeable lithium batteries followed in the 1980’s but the endeavor failed because of instabilities in the metallic lithium used as anode material.
Lithium is the lightest of all metals, has the greatest electro-chemical potential and provides the largest specific energy per weight. Rechargeable batteries with lithium metal on the anode (negative electrodes) could provide extraordinarily high energy densities, however, cycling produced unwanted dendrites on the anode that could penetrate the separator and cause an electrical short. The cell temperature would rise quickly and approaches the melting point of lithium, causing thermal runaway, also known as “venting with flame.”
Read MoreWhen everyone is hunkering down and trying to stay warm its time to think about your lithium batteries.
The good news is that you can discharge or use your battery no matter how cold it gets, without worrying about damage. You will notice that your lithium battery is dying much quicker than it had in warmer months. When temperatures reach this low, below freezing, it temporarily reduces the capacity.
Coming in from the cold your hands can hurt while they warm up. The same thing goes for lithium batteries. When your batteries internal temperature drops below 32 degrees, the lithium cells are unable to accept the same amount of charging current (warmth) as they did when the temperature was warm. Don’t charge your lithium batteries when the battery temperature is below freezing.
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When everyone is hunkering down and trying to stay warm its time to think about your lithium batteries.
The good news is that you can discharge or use your battery no matter how cold it gets, without worrying about damage. You will notice that your lithium battery is dying much quicker than it had in warmer months. When temperatures reach this low, below freezing, it temporarily reduces the capacity.
Coming in from the cold your hands can hurt while they warm up. The same thing goes for lithium batteries. When your batteries internal temperature drops below 32 degrees, the lithium cells are unable to accept the same amount of charging current (warmth) as they did when the temperature was warm. Don’t charge your lithium batteries when the battery temperature is below freezing.
The sun helps too. Are you hooked up to solar power? The good news is even when stored in an unheated location the solar panels will keep your battery active to the point where the internal battery temperature will not drop below freezing.
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