Aerolithium Sodium-Ion Batteries

Azalea Aviation is proud to partner with Aerolithium to offer 2nd-generation sodium-ion batteries as a direct replacement for lead-acid batteries in experimental aircraft. After months of research and battery design, Aerolithium has developed a platform that combines exceptional safety, a wide operating temperature range, and long service life — with no fault-monitoring BMS required.

Contact Aerolithium directly:  [email protected]  |  850-844-8987


Safety

Sodium has zero propensity for exothermic reaction — no flame, no smoke, no internal cell swelling, and no overheating. It is safer than both LiFePO4 and lead acid, and requires no fault light or BMS fault monitoring. There are no weak-point failure modes like those found in lithium chemistries, which means no unexpected shutdowns and no "battery fault" indicator needed in the cockpit.


Operating Temperature Range

Sodium-ion operates across a far wider temperature range than lithium or lead, and is less sensitive to thermal extremes — making it well suited to aircraft operating in varied climates and altitudes.

Mode
Minimum
Maximum
Charge
−10°C / 14°F
+60°C / 140°F
Discharge
−40°C / −40°F
+100°C / 212°F

Voltage Behavior

For 12V systems the operating range is 6 to 16 volts. The battery can be fully discharged to zero volts with no cell damage — eliminating the risk of a sudden BMS cutoff that could cause loss of all aircraft power. No "smart battery" fault monitoring system is required.

The discharge curve is linear, making state-of-health and state-of-charge straightforward to read from a simple voltage display — no complex monitoring needed.

Because sodium acts as a voltage stabilizer, it accepts wide voltage variations and buffers alternator output exactly like lead acid — but without the weight penalty or the risk of an unexpected BMS-triggered power loss.


Performance Comparison

Here is how sodium-ion stacks up against the leading alternatives:

Characteristic
Sodium-Ion
LiFePO4
Lead Acid
Thermal runaway risk
None
Very low
Low
BMS / fault monitoring required
No
Yes
No
Safe to discharge to zero volts
Yes
No
No
Acts as voltage buffer / stabilizer
Yes
Not without BMS
Yes
Cold-weather charge performance
Excellent (−10°C)
Poor
Marginal
Energy density vs. lead acid
Higher
Higher
Baseline
Charge rate
3C
Up to 6C
Low
Discharge rate
~40C
Up to 60C
Low
Self-discharge rate
<1% / month
Low
Higher
Cycle life vs. lead acid
Much longer
Much longer
Baseline
Relative cost
~75% of LiFePO4
Baseline
Low upfront
Environmental impact
Best
Moderate
High (lead)

Pricing & Availability

14V Sodium Experimental Aircraft Batteries

Model
Ah
Weight
CCA / PCA
Dimensions (mm)
Engine / App
Terminals
Price
Na880-16
16.0
5.3 lb
450 / 820
174 x 75 x 169
Experimental
M6 Brass
$395
Na780
13.5
4.2 lb
350 / 770
Std / Mini
Light Sport / 250HP
M6
$325
Na680(m)
12.0
3.5 lb
330 / 680
150 x 86 x 130
Up to 200HP
M6
$300
Na580
9.0
2.7 lb
250 / 580
150 x 86 x 130
Up to 150HP
M6
$250
Na480
8.0
2.7 lb
200 / 480
180 x 77 x 100
Up to 100HP
M6
$185
Na925
17.0
6.6 lb
500 / 950
174 x 166 x 125
Any
M6
$475
NaHX
20.0
6.7 lb
600 / 1200
165 x 125 x 175
Any
M6
$525
Na25GX
20.0
6.7 lb
600 / 1200
192 x 128 x 155
Lead Acid Repl.
M6
$525

28V Sodium Aircraft Batteries

Model
Ah
Weight
CCA / PCA
Dimensions (mm)
Price
NaHX-28
13.0 / 17.0
7.0 / 8.2 lb
375 / 700+
165 x 125 x 175
$700 / $800
Na1200T-28
21.5
12.0 lb
700 / 1300
195 x 166 x 170
$1600
Na1500T-28
28.0
15.0 lb
840 / 1680
240 x 140 x 210
$1900
Na2500T-28
37.0
22.0 lb
1100 / 2200
305 x 210 x 166
$2500

Accessories & Chargers

Item
Features
Price
Bluetooth SOC Indicator
Tri-color LED, 4-30V DC input, 99% accuracy
$30
Victron Blue Smart Charger
IP65 - Charge from 0V or use as power supply
$85
Standard Charger
120/240AC, 6A, clamp or pigtail terminal
$40
Premium Maintainer
10A, Low voltage start, power supply mode
$150
Battery Box
Front Loader type (fitted for Na880-16)
$50

Contact us to be notified when pricing is available or to discuss your specific airframe and battery needs.

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