. TC3 Lithium‐Ion Battery Cell Data Sheet (Part Number MD3) Nominal capacity and voltage Internal impedance (1kHz AC) Internal DC resistance (50% SOC, 37.5A, 10 s, 23°C) Recommended standard charge method Recommended fast charge current to 80% SOC Maximum continuous discharge Pulse discharge at 10 sec Cycle life at 10C discharge, 100% DOD Recommended charge and cut‐off V at 25°C Operating temperature range Storage temperature range Core cell weight Recommended capacity check Recommended operating and storage temperature See performance characteristics on page 2. 2.5 Ah (2.4Ah min), 3.3 V 6 mΩ typical Less than 16 mΩ 1C to 3.6V CCCV, 45 min 4C to 3.6V CC, 12 min 70A 120A Over 1,000 cycles 3.6V to 2V ‐30°C to +70°C ‐40°C to +60°C 75 grams Every 24 months 0°C to +27°C HANDLING  CAUTION – do not short circuit; these cells are capable of very high discharge currents.  DO NOT rotate the negative tab (cap) relative to the can, this may cause internal damage to the cell.  Note that the can is the positive terminal and the cap is the negative terminal (see diagram above).  Higher voltage cell strings can be very dangerous, use caution when assembled into strings of multiple cells. CONNECTING  Series – Cells can be combined in series strings to achieve higher operating voltages by connecting the positive terminal of one cell to the negative terminal of the next cells.  Parallel – Cells can be combined together in parallel strings to achieve higher operating capacities by connecting both positive and negative terminals of adjacent cells to each other.  CAUTION – When connecting cells in parallel, be sure to always connect positive terminals to positive terminals and negative terminals to negative terminals. Never connect positive terminals to negative terminals in a loop as this will result in a short circuit. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS Component Maintenance The battery cell that comprises the MD3 is not a user replaceable item. Therefore, data is not available from the manufacturer to conduct field repairs in the case of a faulty or expired product. In the event that the unit exhibits failure, insufficient capacity, or expired life, contact Mid‐Continent Instruments for exchange or replacement. Installation Limitations The conditions and tests for TSO approval of this article are minimum performance standards. Those installing this article, on or in a specific type or class of aircraft or equipment, must determine that the aircraft or equipment installation conditions are within the TSO standards. TSO articles must have separate approval for installation in an aircraft or equipment. The article may be installed only according to 14 CFR Part 43 or other applicable airworthiness requirements. Storage Although the chemistry of the cell used for the MD3 exhibits a relatively low self‐discharge rate, like all batteries, it will eventually self‐discharge if left unused for long periods. In addition, self‐discharge rates are directly related to the storage temperature. Higher storage temperatures will result in faster self‐discharge rates. Exposure to higher storage temperatures for sustained periods of time is possible, but may increase the self‐discharge rate or result in some loss of capacity. If left unused for more than 6 months, the cell should be recharged prior to use following guidelines above. Disposal NOTE: All lithium ion batteries are classified by the federal government as non‐hazardous waste and are safe for disposal in the normal municipal waste stream. However, these batteries do contain recyclable materials and recycling options available in your local area should be considered when disposing of this product. Do not incinerate. Rev. D December 30, 2011 Manual Number 9017188 MID‐CONTINENT INSTRUMENT CO., INC. 9400 E. 34TH Street N., Wichita, KS 67226 USA phone 316‐630‐0101 ∙ fax 316‐630‐0723 ∙ web www.mcico.com Page 1 . * Various information provided by A123 Systems. Rev. D December 30, 2011 Manual Number 9017188 MID‐CONTINENT INSTRUMENT CO., INC. 9400 E. 34TH Street N., Wichita, KS 67226 USA phone 316‐630‐0101 ∙ fax 316‐630‐0723 ∙ web www.mcico.com Page 2