Key Features & Benefits:

• Bluetooth - Check the health of your battery, anywhere, at any time, right from your smart phone.
• Battery Management System - Also referred to as the brain of the battery, the built-in BMS protects your cells from excessive currents and short circuits.
• Temperature Control - The built-in low-temperature sensor protects the battery in extreme temperatures. 
• Over Charging and Discharging Protection - Another awesome built-in BMS feature.
• Options - Can be connected in a series for 24V or 36V or 48V battery bank, or connect in parallel for larger capacity.
• Long-Lasting - A ridiculous 4000-8000 cycles.
• Only 44 lbs -  Keeping your loaded weight to a minimum.
• Waterproof - Made for marine environments - Rated at IP65
• Serviceable Case - Just as easy to work on as they are to use.
• 7-Year Warranty - Because these batteries are expected to last!

In order to save battery power the bluetooth turns off after 6 hours of inactivity. As soon as charge or discharge is detected the bluetooth will turn back on.

Dimensions & Specifications:

Size: 10.6" x 7.9" x 8.2" (L x W x H)
Weight: 28.2 lbs
Terminal Type: M8, 5/16 lugs
Weather Rating: IP50
Watt Hours: 1280 Wh

Charge Information:

Recommended Charge Current: 40A
Maximum Charge Current: 50A
Recommended Charge Voltage: 14.6V

Discharge Information:

Maximum Continuous Discharge Current: 100A
Peak Discharge Current: 200A (3 seconds)
Recommended Low Voltage Disconnect: 11.2V
BMS Discharge Cut-Off Voltage: ~ 10.4V
Reconnect Voltage: >11.6V

Temperature Information:

Charge Temperature: -20 to 45ºC (-4 to 113ºF)
Discharge Temperature: -20 to 60ºC (-4 to 140ºF)
Storage Temperature: -5 to 35ºC (23 to 95ºF)

Previously you were not able to connect heated batteries in series.

Now with the updated V8 BMS they can be connected in series.

However with series connection you need a battery voltage balance. This one from Victron is recommended.

More Information:

SOK Frequently Asked Questions Sheet

For more information, watch this unbiased review with over 195k views

Recommended Wall Charger: Victron Blue Smart Battery Charger 12V/25a (IP67)

Can be connected in a series for 24V or 36V or 48V battery bank, or connect in parallel for larger capacity.

Does the SOK battery have low-temperature protection?
Yes. The BMS inside the battery will prevent charging below 0°C in order to protect the cells. It will allow the battery to discharge in freezing temperatures. If you need to charge the battery in freezing temperatures then we recommend the heated versions.

Can I store these SOK batteries in the cold?
The lowest safe storage temperature is -6°C. For any temperatures below this, you should bring them inside or add a heating pad of some sort. If a heating pad runs out of power and the battery falls below -6°C, damage may occur.

Do the SOK batteries fit into a standard "group size" battery box?
No they are likely too big to fit into standard boxes. Many people put them in tool boxes or any enclosed unit that protects them from the elements. The metal case units are not fully waterproof while the plastic case (marine version) are 100% waterproof.

Can I use any charger on the SOK batteries?
The batteries have a 7 year manufacturer warranty. If you are having issues with the battery we are here to help. In the rare case of a warranty claim we will ship you a new battery and deal with the claim with SOK. The 7-year warranty covers anything that fails or doesn't stand up to the manufacturers' specs, and includes both the cells inside and the BMS.

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