MillerTech 1222-BT
The MillerTech 1222-BT is a battery pack with a nominal voltage of 12.8V, LFP (Lithium Iron Phosphate) cells, a peak of 66 A and an ingress rating of IP65.
Last updated: 15 October 2026
Battery and charging
- Voltage
- 12.8V
- Chemistry
- LFP (Lithium Iron Phosphate)
- Cell arrangement
- 4S-4P
- Maximum continuous discharge
- Max Charge/Discharge Current: 22A
- Peak discharge
- 66A
- Highest charge current it will take
- Max Charge/Discharge Current: 22A
- Charging voltage
- Max Charge/Voltage: 14.6V
“Capacity 22AH Voltage 12.8V Weight 7.8 lbs Size 7.125” x 3.125” x 6.125””
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Chemistry – LFP (Lithium Iron Phosphate)”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“The battery is built using a 4S-4P internal cell configuration”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Max Charge/Discharge Current: 22A”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Peak Discharge Current: 66A – 5 sec”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Max Charge/Discharge Current: 22A”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Max Charge/Voltage: 14.6V”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
Battery care and safety
- Ingress protection
- IP65
- Low-temperature charge protection
- Yes
- What the battery management system protects against
- protects against over-charging, over-discharging, excessive current, and unsafe temperatures
“This means they are Marine approved IP65 rated”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Low Temp Charging Protection: Yes”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“The battery includes an integrated Battery Management System (BMS). The BMS protects against over-charging, over-discharging, excessive current, and unsafe temperatures to extend battery life.”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
Size and fit
- Overall dimensions
- 7.125” x 3.125” x 6.125”
- Terminals
- heavy-duty M8 stainless steel terminals
- Connector on the battery
- M8
“Size 7.125” x 3.125” x 6.125””
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Built with heavy-duty M8 stainless steel terminals and a robust 4S-4P configuration for powerful performance without excessive heat.”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
“Built with heavy-duty M8 stainless steel terminals”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
Other findings
- Bluetooth
- Bluetooth
“Equipped with Bluetooth technology”
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
Sources
- 12V 22AH Sport Series Lithium Battery W/ Bluetooth (1222-BT) - MillertechArchived document
Source: millertechenergy.com/product/12v22ah-sport-series-lithium-battery-with-bluetooth
Retrieved October 11, 2026