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Specifications

Capacity and Voltage

Model
Voltage, nominal (V)
Voltage, min - max (V)
Capacity (Ah)
Capacity (Wh)
SL8 - Air
21.6
18 - 25.2
7.3
157
SL4 - Ground
21.6
18 - 25.2
4.1
86.4
Ambient Temperature
-20 °C to 50 °C
Battery Cell Temperature
10 °C to 50 °C
Charging Temp
0 °C to 50 °C
Weather
Moderate rain (~3 mm per minute)
Drop rating
1 meter
USB Power Delivery
60 Watts (Up to 3 A at the following voltages: 20, 15, 12, 9, 5)
Cell Chemistry
Lithium-Ion
Cell Type
SL8 : Samsung 40T
SL4 : Lishen LR2170SF
Max Continuous Current (10 s)
SL8 : 80 A
SL4 : 13.5A
Max Peak Current (1 s)
SL8 : 120 A
SL4 : 20 A
Mass
SL8 : 1035 g
SL4 : 600g

Transport

Airline Travel

Please consult local regulations.
*SL-4 model is not compatible with Astro.
Detail of FAA regulations here:

Shipping

We’ve found that FedEx provides the easiest path to ship batteries. Their website has a search tool to find FedEx locations that can accept batteries can be found good shipments, go to https://www.fedex.com/locate > More... > Dangerous Goods Shipping > and Search in your area.
If you’d like to pack the batteries yourself, guidelines can be found in the UPS guide to safely packing batteries. Refer to the Lithium batteries section (SL batteries are classified UN3481). These guidelines are universal across shipping providers.
Last modified 5mo ago