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Lipo Safety: A Safety Guide for Using Lithium Polymer Battery Chargers

Lipo Safety: A Safety Guide for Using Lithium Polymer Battery Chargers

When it comes to lithium cell technology, the lithium polymer (LiPo or Li-poly) and the lithium ion (Li-ion) are significantly different from the commonly-used NiMH and NiCd batteries. There are various aspects to consider before you use lithium cells.

One of the most being safety. While every type of cell should be treated with caution due to energy contained in the batteries, once they are fully charged it is important to know that lithium cells contain the maximum in energy density. These batteries have unique qualities and require extremely specialized safety considerations.

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Charging Lithium Polymer Batteries

The lithium cells have to be charged in a very different way than the NiMh and NiCad batteries. These batteries require specialized chargers that are designed in a specific way in order to charge lithium polymer cells. One of the recommended chargers would be the TAHMAZO T26 charger; this is the type of charger that can be used on all cell types and is able to charge up to 10 LiPo cells. This charger features 10 battery memories, which makes it far easier to utilize.

Typically any type of charger that is able to charge the lithium ion will be able to charge the lithium polymer, making sure that the batteries in question have the correct cell count. It is extremely important to note that a NiMh or NiCad-only battery charger is never used to charge the lithium cells because charging the cells is dangerous when using the lithium batteries.

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Manufacturers and experts all recommend extreme caution when charging these cell types.[1] One of the first steps in preparing the charger for lithium cells is to make sure the charger has been set to the right cell count or voltage. If this step is missed the battery could potentially burst into violent flames. To date there have been numerous fires that have been caused directly from lithium batteries. For this reason it is now a standard practice that anyone wishing to use lithium polymer batteries should be aware of how to charge the cells and the safety precautions involved.

Below are the guidelines for charging and using lithium polymer batteries:[2]

  • Only use the chargers that have been approved for use with lithium batteries. These chargers should be designed for use on Li-Ion and Li-Poly.
  • The correct cell-count must be set on the charger. If the user is not informed on how to perform this operation it is advisable to rather use a charger that you do know how to operate or not charge the batteries at all.
  • Make sure to balance charge your new lithium battery for the next couple of cycles. After that you can do it every 10th cycle. This is vital due to the risk of a pack that has become unbalanced, thus having the potential to explode. If each of the cells is showing a reading that they are not within at least 0.1 volt to one another, the user needs to charge each of the cells separately up to 4.2 volts, which means they will all be equal. If after the period of each discharge the lithium pack shows up unbalanced, one of the cells are more than likely faulty and the entire pack will need to be replaced. (Of course, some lithium packs are different and will require a different amount of volts for recharging.)
  • The batteries and the charger need to be placed onto surfaces that are safe before charging the batteries, which means that if they do catch on fire damages can be contained. Some of the suggestions include fireplaces, Pyrex dishes that are filled with sand or a vented fire safe.
  • The batteries should never be charged for more than an hour at a time. Exceeding this time significantly increases the chances of a fire.
  • If one of the cells happens to balloon while on charge, the cell should not be punctured while still hot. This will cause a short circuit resulting in overheating. After you have let the cell sit in a fire safe place for at least 2 hours. Discharge the cell/pack slowly by wiring a flashlight bulb of appropriate voltage (higher voltage is ok, lower voltage is no) up to your batteries connector type and attaching the bulb to the battery. Wait until the light is completely off, then throw the battery away. This is an important step to do so the cell is safe enough to throw away.
  • The batteries should only be charged in ventilated and open areas. (In the case of a battery rupturing or exploding they will emit dangerous material and fumes.)
  • When charging lithium batteries, keep a bucket of sand nearby. This is a cost effective way to extinguish fires. It is very cheap and absolutely necessary.

(Also make sure to check out this battery disposal guide for information regarding instructions and regulations about battery disposal.)

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Final Thoughts

When it comes to handling lithium polymer batteries with care it is important for any user to realize that these batteries can be extremely dangerous. It is very important to follow these safety tips and ensure that the right charger is used.

Featured photo credit: Hexcam via dronetraining.co.uk

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Reference

[1] Battery University: Lithium-ion Safety Concerns
[2] Sydney Radio Control Society: October 2006 Newsletter

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Elise Bauer

Freelance Writer, Lawyer & Blogger

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Published on September 17, 2020

10 Best Monitors for Your PC Under $100

10 Best Monitors for Your PC Under $100

Are you looking for the best monitor under $100?

Whether you want it for your home office, editing photography, or gaming, you don’t need to spend big bucks on a display screen because a low budget one will certainly do the trick.[1]

We can almost hear you having second thoughts about the picture quality, but you don’t have to worry at all.[2]

Our list of the best monitors under $100 will be more than enough to cover you. Just go through it now, and you’ll find yourself a bargain.

Why You Should Trust Us

Our list incorporates some of the best low-budget monitors available in the market. Their efficiency and distinctive traits enable them to stand out from others.[3] The hand-picked ones below are incredibly slick and have a high refresh rate, fast response time, high resolution, and built-in speakers.

1. Acer Ultra Thin Frame Monitor

    Our first affordable computer screen is Acer’s 21.5-inch ultra-thin frame monitor. It has a refresh rate of 75Hz using an HDMI port and offers a full HD widescreen display.

    Its brightness can be maxed out at 250 nits. It has a slight tilt angle ranging from -5 to 15, as well as Radeon free sync technology.

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    Buy this computer monitor.

    2. Sceptre Ultra-Thin Display

      Sceptre is another company that provides excellent displays for your CPU. The screen size is a little smaller at 20 inches, but it’s made up for the slightly lower price than Acer. It also comes with two HDMI ports and built-in speakers and is wall mount ready.

      Buy this computer monitor.

      3. ViewSonic LED Monitor

      best monitor

        If you want the best monitor to set up in your office or around the house, ViewSonic’s LED screen is another good option to buy. The resolution is full HD and has a broader tilt ranging from -5 to 23 degrees.

        On top of that, the product comes with a 3-year warranty. Included in the bundle are a VGA cable, monitor, power cable, and audio cable.

        Buy this computer monitor.

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        4. ViewSonic Gaming Screen

          While we just covered a ViewSonic monitor, this one is specifically built for gaming in mind.

          Overall, this computer screen provides the same specs as the previously mentioned item. The key differences are that this one is slightly longer, comes with pre-set customizable visual modes, and offers a maxed out contrast, delivering a dynamic contrast ratio for sharp and crisp images. It also comes with a DVI cable.

          Buy this computer monitor.

          5. Asus Back Lit Monitor

          best monitor

            If you don’t mind spending a little more money, you can get an Asus Back Lit Monitor for your PC. A lot of the focus is on image quality, particularly having a strong contrast ratio and smart video technology for straight viewing. That feature also helps in reducing blue light since you’ll have more flexibility with the colors and brightness.

            Buy this computer monitor.

            6. Asus Back Lit Display

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              Another alternative to the previous Asus monitor is this one. It has a smaller contrast ratio, though it still delivers a smooth video display. You also have aspect controls, so you can adjust its display.

              Buy this computer monitor.

              7. Dell Ultrasharp Panel Monitor

              best monitor

                If you’re looking for the basic features, look no further than Dell. There’s nothing particularly fancy about this panel screen, but it does the job well for any computer.

                Its response time is 8ms, which is typical for a monitor. It can come in either silver or black.

                Buy this computer monitor.

                8. ViewSonic Frameless Monitor

                  If you liked ViewSonic’s LED monitor but wanted a little more features, we suggest looking at their frameless display. While it boasts similar specs as the brand’s other monitors, it offers color correction and dual built-in speakers, making it ideal for office and home use. It’s also 22 inches long.

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                  Buy this computer monitor.

                  9. Dell Mountable LED-Lit Monitor

                    For a dependable display with a good frame rate, Dell has a mountable, LED-lit monitor in the market. It measures 18.5 inches, has an adjustable arm, and has been through rigorous testing for long-lasting reliability. You can’t go wrong with this best monitor either.

                    Buy this computer monitor.

                    10. Sceptre Monitor

                      The final screen to cover comes from Sceptre. Compared to the ultra-thin version mentioned above, this one is available in 22 inches. Beyond that, it’s your standard display that provides decent tilting at -5 to 15 degrees, wall-mounted capabilities, 5ms response time, and built-in speakers.

                      Buy this computer monitor.

                      Final Thoughts

                      Finding one of the best monitors around can be tricky. If you’re looking for an affordable one that can last for years, consider picking a computer screen from this list.

                      Featured photo credit: Sebastian Bednarek via unsplash.com

                      Reference

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