5th Generation Standard Battery Sizing – 12V & 24V (28V) – Rectangular Dimensions:
Ah Lbs CA Dimensions (L x W x H) case / type 12V Cost Impedance
4.5 2.2 240 3.25 x 3.5 x 4.5″
(85.6 x 88.9 x 114.3mm)
shrink wrap $175 10
8 3.5 400 3.25 x 3.5 x 5.75″
(85.6 x 88.9 x 146.1mm)
shrink wrap $275 7
8 4.9 400 7.0 x 2.0 x 6.5″
(177.8 x 50.8 x 165.1mm)
aluminum $300 7
16 6.6 800 5.75 x 3.25 x 5.5″
(146.1 x 85.6 x 139.7mm)
Carbon Cub $550 5
16 8.2 800 7.0 x 3.5 x 6.5″
(177.8 x 88.9 x 165.1mm)
aluminum $575 5
24 20 1200 8.5 x 6.0 x 6.5″
(215.9 x 152.4 x 165.1mm)
Lith. Turbine (28V) $6000 3
5th Generation Batteries
Payment by check preferred; PayPal / CC accepted (+3% transaction fee).

Starting 2012, we now accept gold coins / bars and silver bars (0.9999) as payment.

Battery Warranty:  2 Year, prorated.


Lithium balancing charger, $75 w/ battery, $85 without. All batteries come with diagnostic connector.
Voltmeters (green, blue, red ) … $40
Our 5th Generation AeroLithium aircraft batteries use 8mm threaded stud terminals and are now available either shrink wrapped, for applications where a hard case is not needed, or Aluminum for more durable requirements, where the aluminum case replaces the traditional battery box.


4.5Ah for all ultralights.

8Ah for the following and similar ENGINES: Rotax, IO-360. IO-390, IO-470.

16Ah for the above, as well as: IO-540, IO-550, TIO-540, TIO-550.

24V, 16Ah for smaller turbine engines.

24V, 24Ah for bigger turbine engines.

For 24V/28V use two 12V batteries in series.


Additional Notes:
  • Aug ’15 Update:  All Aero packs for aircraft recommend a lithium balancing charger (+$75, $85 without battery).  All owners using Lithium packs will check the internal cell balance every 20 flight hours with the charger.  If all is good for two checks, increase cell check interval to 30 hours, if good, increase to 40 hours and maintain.  This applies to all lithium batteries made by anybody.
  • All batteries are pre-balance charged and include a balancing circuit.
  • All packs are direct replacement for any lead acid battery and other lithium batteries.
  • Bigger custom sizes available including ground power units. Contact us with your requirements!
  • A good method to determine what cranking amps your starter needs to start the engine is a clamp-on ammeter around a battery cable.
  • Visit the FAQ page for a sampling of starter amp requirements.

Quality & Safety

Quality of Aerolithium Materials

Cells – Lithium Iron Phosphate (LiFePO4)
Terminals – Copper or Brass
Enclosure – aluminum case; shapes to fit your needs
Warranty – 2 year prorated
Discharge graph – lithium’s flat power curve beats lead acid
Operating temps – minus 20 to 65 Celsius
Electronics – Balancing circuit standard as well as lithium balancing charger
Voltage – 14.4 and 28.8 systems, 10V to 14.5V operating range
Self-discharge – < 5% per year
Specific energy density – 118wh/kg


LiFePO4 Safety information

Many still think that all Lithium batteries are the same, unstable technology.  And there are major PbAcid battery mfr’s putting out downright false information.

If you don’t live, eat and breath lithium… all you know is what you read. So, here is some reading material to get you on the right track:

Charging System Basics

An engine’s electrical system is said to be a 12 volt system, but this is slightly misleading. An aircraft’s charging system will generally produce a voltage between 13.5 and 14.4 volts while the engine is running. It needs to generate more voltage than the battery’s rated voltage to overcome the internal resistance of the battery. This may seem strange, but the current needed to recharge the battery would not flow at all if the charging system’s output voltage was the same as the battery voltage. A greater difference of potential (voltage) between the battery’s voltage and the alternator’s output voltage will provide a faster charging rate.  Thus, a Lithium battery will draw less charging current and charge quicker than the typical sealed (or older wet cell) lead acid aviation battery.

Parasitic Drain Info – MUST read before installing your new lithium battery!

A good way to know what cranking amps your starter needs to start engine; use a clamp-on ammeter around a battery cable.

PowerPoint presentation on using LiFepo4 batteries.

Who We Are

Aerolithium is the only high-tech company specializing in custom design and development of lithium batteries for the Aviation and Aerospace industry.

Our proven lithium power solutions for Defense and Aerospace systems enhances performance, reliability and mission success.

Serving General aviation, Experimental designs, Commercial and Military clientèle worldwide.