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Batteries
EMERGENCY SAFETY ALERT Lithium Battery Fires
Lithium batteries are becoming very popular for powering the control and power systems in our models. This is true because of their very high energy density (amp-hrs/wt. ratio) compared to NiCd’s or other batteries. With high energy comes increased risk in their use. The principal risk is FIRE which can result from improper charging, crash damage, or shorting the batteries. All vendors of these batteries warn their customers of this danger and recommend extreme caution in their use. In spite of this, many fires have occurred as a result of the use of Lithium Polymer batteries resulting in loss of models, automobiles, and other property. Homes and garages and workshops have also burned. A lithium battery fire is very hot (several thousand degrees) and is an excellent initiator for ancillary (resulting) fires. Fire occurs due to contact between Lithium and oxygen in the air. It does not need any other source of ignition, or fuel to start, and burns almost explosively. These batteries must be used in a manner that precludes ancillary fire. The following is recommended:
- Store, and charge, in a fireproof container; never in your model.
- Charge in a protected area devoid of combustibles. Always stand watch over the charging process. Never leave the charging process unattended.
- In the event of damage from crashes, etc, carefully remove to a safe place for at least a half hour to observe. Physically damaged cells could erupt into flame and after sufficient time to ensure safety, should be discarded in accordance with the instructions which came with the batteries. Never attempt to charge a cell with physical damage, regardless of how slight.
- Always use chargers designed for the specific purpose, preferably having a fixed setting for your particular pack. Many fires occur in using selectable/adjustable chargers improperly set. Never attempt to charge Lithium cells with a charger which is not specifically designed for charging Lithium cells. Never use chargers designed for Nickel Cadmium batteries.
- Use charging systems that monitor and control the charge state of each cell in the pack. Unbalanced cells can lead to disaster if it permits overcharge of a single cell in the pack. If the batteries show any sign of swelling, discontinue charging and remove them to a safe place outside as they could erupt into flames.
- Most important: NEVER PLUG IN A BATTERY AND LEAVE IT TO CHARGE UNATTENDED OVERNIGHT. Serious fires have resulted from this practice.
- Do not attempt to make your own battery packs from individual cells.
Safety Committee Academy of Model Aeronautics 5161 E Memorial Drive, Muncie, IN 47302 These batteries CAN NOT be handled and charged casually such as has been the practice for years with other types of batteries.. Wow Hobbies is not reponsible or liable for the resulting property damage and/or personal harm from these batteries.
Price: $24.95 Our Hottest Seller!
It's time to retire those old "AA" batteries. This is the smartest new solution to charge up your Walkera transmitter radio. No more guess work on 12 iffy connections or 8 "AA" batteries in a tray. Everything is consolidated into one simple reliable unit.
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Price: $10.95 (Same as HM-4G3-Z-31)
HM-4#3B-Z-29: Charger for all 1s micros & Novus helis made by Walkera. Featuring convenient "plug in the wall outlet" with operation that will automatically shut-off when the battery is fully chartged and the LED indicator turns from red to green.
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Price: $10.95 (Same as HM-4#3B-Z-29)
HM-4G3-Z-31: Charger is shared between all micro 1s Walkera and Heli-Max Helicopter Models. The charger will automatically shut off upon charge completion and the LED indicator will turn from red to green. Charges any 1 cell Lipo 50 mAh to 1000 mAh.
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Price: Replaced by 4#3B and 4G3 batteries
Replaced by 4#3B and 4G3 batteries
Specifications:
400 mAh
3.7v
1-cell
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Price: $23.00 This is a 220 volt version
HM-60#B-Z-35 Balance 220V Charger for 2 or 3 cell lipo batteries with built-in balancer (3 and 4 pin battery connectors & round wall plugs). Please use extra caution - if you oder the wrong voltage charger, it will not be returnable.
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