Proper Way to Disposal of Lithium Polymer Battery

To begin with, damaged lithium polymer batteries (and even undamaged ones) can be extremely dangerous. The horror stories are very well-known, but new RC hobbist typically don’t come across good info on proper handling, storage, and disposal of lipos until well after they’ve begun their journey into the hobby. Usually, it takes a search for “why is my lipo so swollen?” before people get the spiel about the dangers of lipos. The scary part is that most people would have squeezed and poked at the RC lipo before they ever do the research. And typically, if you’re new, you’re doing some crashing and hard landings that bang the battery up even more.

The most important part of lipo disposal is to make the lipo safe, safe to be crushed in a garbage truck or safe when tossed in the recycle bin. We do not want to pass off a potentially dangerous lipo to people that do not understand what it is or how to handle it. As such I believe we have a responsibility to make them safe before they leave our care.

So, what is the safest way to dispose of LiPos? Enter the humble incandescent 12 volt automobile taillight bulb. If you have any skill at all at soldering (and you’ll need it anyway if you do anything with electric RC) it’s very easy to solder some wire to the contacts of a 12 volt automobile taillight, add whatever your battery connector of choice is to the other end and insulate it with electric tape or heat shrink. To dispose of your battery, just plug the battery into the taillight, put it somewhere where it’s safe (I use the holes in a cinderblock with a plastic baggie full of sand above - if the battery blows the baggie will melt and the sand will pour over the battery) and leave it until the bulb goes out. Then leave it for some hours more, check the voltage to make sure the battery is completely discharged, cut of the battery connector, strip the wires and twist them together. Then dispose or recycle the now completely safe battery. A single taillight bulb will work for up to a 11.1v lipo pack of any size, use two taillights in series for 4S lipo battery or more.

Here recommend Brand Lipo battery for you

Trust the battery that consistently delivers peak performances even through the roughest conditions. The Gens Ace 40C 4S 5000mAh 7.4 lipo battery pack has a high-capacity, high-discharge rate that gives you the power and run-time you expect from all Gens Ace batteries. This battery includes not only plug adaptors to fit Deans, Traxxas, Tamiya and EC3 plug types, but also heavy-duty features like 12 AWG soft silicone wire leads and our patented High Current Universal Plug System.

Gens Ace warrants this product to be free of material and workmanship defects when new. This product has been checked for proper functionality and inspected before leaving the factory. All Gens Ace batteries are warranted against the following: DOA (Dead on Arrival) cell or pack, swollen or puffed pack upon arrival, loose or broken solder joints, and wires or plugs on arrival.

Home made battery disposal

The first task is to drain the battery to 0V as Lithium polymer batteries are safe if carrying no voltage then you need to ensure no more charge can build up, the following will guide you through it.

  • Grab a bucket of sand and place it outside with the battery inside.
  • Connect an led or small lamp to the battery and drain it completely, leave connected for 1 day after the led stops glowing.
  • Cut the connectors off the battery.
  • Strip the wires
  • Join the red and black wires to create a short circuit and prevent any build up of voltage.
  • LiPo Battery successfully stabilised and you can safely dispose in the regular trash.

A slow discharge produces less heat and is much more safer then draining the battery fast with a motor or high load connection.

Hopefully I have dispelled the myth of salt water LiPo disposal, and I hope that this helps people who are looking for a safe way to dispose of their LiPos.

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Gens Ace Lithium-Polymer Battery Safe Guide Instructions

Lithium-polymer batteries offer a variety of significant advantages over NiCd, NiMH and Lipo batteries for use in R/C electric devices. It is very important to have a good understanding of the operating characteristics of RC airplane battery - especially how to charge and care for them safely. Always read the specifications printed on the battery’s label and this instruction sheet in their entirety prior to use. Failure to follow these instructions can quickly result in severe, permanent damage to the batteries and its surroundings and even start a FIRE!

WARNING! Lithium-polymer batteries (LiPo) are entirely different than Nicd and NiMH batteries and must be handled differently as well. Gens Ace Racing will not be held responsible for any and all incidental damages and bodily harm that may result from improper use of Gens Ace brand lithium-polymer batteries. In purchasing these products, the buyer/user agrees to bear all responsibilities of these risks and not hold Gens Ace, its distributors (owners and employees) and/or retailers responsible for any accidents, injury to persons, or property damage. If you do not agree with these conditions, please return the battery to the place of purchase.

Gens Ace 4S
Before and after every use of your LiPo battery, inspect all cells in the pack as much as possible to ensure no physical damage or swelling is evident. Such signs can often indicate a dangerous problem exists with the battery that could lead to failure.

Battery Voltages, Ratings & Applications

LiPo batteries can be assembled in many configurations. Packs are most commonly found with cells assembled in series, normally denoted with an “S”. For example, 3 cells in series are often denoted as “3s 11.1v lipo battery”. Each LiPo cell has a nominal voltage rating of 3.7V (with a minimum recommended discharge voltage of 2.8V, and a maximum charge voltage of 4.20V). The more cells assembled in series, the higher the total voltage of the pack. But assembling in series does not affect the overall rated capacity of the pack as shown in the diagram on page 2.

Charging the Battery

IMPORTANT WARNINGS: Be sure to follow these important warning statements regarding the charging of LiPo batteries:

•NEVER LEAVE A LIPO BATTERY UNATTENDED AT ANY TIME WHILE BEING CHARGED!!
•NEVER charge a LiPo battery while it’s inside the model. A hot pack could ignite wood, foam, plastic, etc.
•NEVER charge LiPo batteries with a NiCd or NiMH peak charger!
ONLY use a charger specifically designed for LiPo batteries which can apply the “constant current /
constantvoltage” charge technique (cc/cv). MuchMore offers several LiPo compatible chargers (www.much-more.co.kr) which can be found at your local retailer.
•NEVER charge LiPo batteries at currents greater than the “1C” rating of the battery (“C” equals the rated capacity of the battery).
•NEVER allow LiPo cells to overheat at any time! Cells which exceed 140°F (60°C) during charge can and USUALLY WILL become damaged physically and possibly catch FIRE!! Always inspect a battery which has previously overheated and do not re-use if you suspect it has been damaged in any way.
•ALWAYS discontinue charging a LiPo immediately if at any time you witness smoke or see the battery starting to swell up. This may cause the battery to rupture and/or leak, and the reaction with air may cause the chemicals to ignite, resulting in fire. Disconnect the battery and leave it in a safe fireproof location for approximately 15 minutes.
•ALWAYS charge a LiPo battery in a fireproof location, which could be a container made of metal (such as an ammunition box), ceramic tile, or a bucket of sand. ALWAYS have an “ABC type” fire extinguisher available at all times.

Gens Ace provides lithium battery solutions to power your portable devices. We can help consumer and industrial companies to meet their design challenges with a wide range of standard products and easy customisation options.

Our Lithium Ion Polymer (Li-Po) and Lithium Ion (Li-Ion) battery technologies offer flexible, efficient and reliable solutions to your mobile power and back up power needs. Many of our cells are pre-certified to UL1642 or IEC62133. We can undertake these and other certification testing as required by our customers, including UN38.3 for transportation. The cell list you see on the site is only a selection of available products, which include very High Energy Density cells and High Current Discharge as well as High and Low Temperature Cells.

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Lithium Polymer Charging/Discharging Safety Tips

Lithium Polymer cells are a tremendous advance in battery technology for RC use. However, due to the chemistry of lithium cells, there is a possibility of fire if charging is not properly done. It is unavoidable due to the nature of lithium itself. This is no different from many things we use in daily life – knives, kitchen cleaners, automobiles, for a few examples – which are inherently dangerous, but which can be used safely by adhering to simple rules and precautions.
  • Batteries should NEVER be left unattended while charging.
  • Be absolutely sure that the lipo battery packs charger settings are correct for the battery pack being charged – both voltage and current settings.
  • Lithium Polymer must be CHARGED and STORED in a fire-safe container like a Lipo Sack.
  • Do not charge batteries near flammable items or liquids.
  • Keep a dry fire extinguisher nearby or a large bucket of dry sand, which is a cheap and effective extinguisher.
  • Never charge inside an automobile even when parked.
  • Keep Batteries Away from children and pets at ALL times.

Connection: Be sure that the correct polarity is observed when connecting battery packs to charger or ESC.RED = POSITIVE (+)

BLACK = NEGATIVE (-)

Charging/Discharging: Your new pack arrives half charged. Charge your pack fully before first use. Charge your LiPo battery pack at 5C or less on the LiPo setting only. You must use a balance charging system similar to the Hyperion chargers offered here at MaxAmps. Otherwise, you risk your pack becoming severely out of balance over time, which will significantly decrease the lifespan.Ex: If charging a 4000mah LiPo pack at 1C, you would be charging it at 4 Amps.

Ex: If balance charging a 4000mah rc battery lipo at 5C, you would be charging it at 20 Amps.

Please refer to your owner’s manual regarding the recommended ESC cutoff voltage for your particular application prior to first use to avoid accidentally over-discharging your batteries.

Do NOT charge your LiPo packs on a NIMH/NICD charger. Your charger must be designed for LiPo cells. Do not charge above 4.2V per cell, over discharge under 3V per cell. Never leave LiPo packs unattended during charging or after a crash in your vehicle. Don’t leave the battery pack plugged into a vehicle while not in use. The pack can still discharge to an unsafe level and damage the pack even if all components are turned off.

It is dangerous to draw more power than what the pack is rated for. This will void any warranty on the pack and can also cause your battery pack to ignite into flames. The temperature of the pack should never exceed 140F degrees. If it does, you may need a pack that is rated to handle more power.

Storage Procedure: When not using your LiPo/Life battery pack, store it at 60-70% of the pack’s rated capacity. Make sure to cycle your packs at least once per month since leaving them on the shelf for a prolonged period of time can cause the packs to get severely out of balance, puff/swell or even go dead.Balancing taps on LiPo/LiFe Packs: All MaxAmps LiPo/LiFe packs come standard with a JST-XH style balancing tap (white connector). This tap is compatible with all Hyperion balance chargers. Always balance charge your pack before each use as this “matches” the voltage of each cell to give you the highest performance and longest life.

Handling Cautions:

  1. Never leave batteries inside a car on a hot day or any other place where temperature may exceed 140F / 60C.
  2. Although environmentally friendly, lithium polymer cells must be FULLY discharged before disposal. Use a resistor setup (light bulbs, for example) to accomplish this, to avoid the possibility of a short-induced fire after disposal.
  3. Immediately discharge damaged batteries at 1/2 C rate and dispose.
  4. Do not put the loose cells in a pocket, bag, or drawer where they could short-circuit against other items, or the battery tabs could be pressed against each other.
  5. Do not place the loose cells on any conductive surface, such as a metal-topped table.
  6. We recommend purchasing pre-assembled packs rather than assembling packs from loose cells.
  7. Take care that the cells are not punctured, especially by metallic objects like hobby knives.
  8. If the electrolyte in the cells should get on your skin, thoroughly wash with soap and water. If in the eyes, rinse thoroughly with cool water. Immediately seek medical attention for this, or for burns.
  9. Although our batteries are now water sealed, we do not recommend submerging our batteries for extended periods of time. The battery packs will be protected during normal rc conditions.

All Lithium Polymer Batteries we carry are only approved for rc use, and may not be used in any other application. Battery discharging, charging, electric motors, spinning propellers, and flying models all have the potential for serious injury to persons and damage to property. In purchasing these products, the user agrees to accept responsibility for all such risks, and not to hold the battery manufacturer, distributors, or retailers - (all including owners and employees) -responsible for any accident, injury to persons, or damage to property.The use of Lithium Polymer batteries in radio-controlled models is to be considered experimental, and there is no warranty, expressed or implied, by the manufacturer, distributors, or retailers with respect to the capacity, life in cycles, storage, or discharge characteristics of lithium cells in RC use, nor any other use nor aspect unless otherwise stated.

This article comes from: http://rclipobatteries.blogspot.com/2015/12/lithium-polymer-chargingdischarging.html

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