MillerTech 12135-DPH
The MillerTech 12135-DPH is a battery pack with a nominal voltage of 12.8V, 1.728kWh of energy, LiFeP04 cells, a peak of 300 A and an ingress rating of IP65.
Last updated: 15 October 2026
Battery and charging
- Cells
- prismatic
- Energy
- 1.728kWh
- Voltage
- 12.8V
- Chemistry
- LiFeP04
- Maximum continuous discharge
- MAX CHARGE/DISCHARGE CURRENT- 135A
- Peak discharge
- 300A
- Highest charge current it will take
- MAX CHARGE/DISCHARGE CURRENT- 135A
- Cold cranking amps
- COLD CRANKING AMPS- (CCA) 1500A
- Charging voltage
- MAX CHARGE VOLTAGE- 14.6 V
- Float voltage
- 13.5V
- Voltage it cuts off at
- LOW CUT OFF VOLTAGE- 10V (ANY CELL 2.5)
- How fast it loses charge sitting idle
- SELF DISCHARGE RATE- < 4% / MONTH
“This battery is constructed using prismatic lithium cells.”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“CAPACITY- 135AH ENERGY STORAGE- 1.728kWh NOMINAL VOLTAGE- 12.8V”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“Capacity 135AH Voltage 12.8V Weight 33 lbs Size 13” x 6.75” x 9””
Source: millertechenergy.com/product/12v-135ah-heated-battery
“Dual Purpose Batteries LiFeP04 are quickly becoming a popular item that many enthusiasts demand.”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“MAX CHARGE/DISCHARGE CURRENT- 135A”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“Peak Discharge – 300A The battery can deliver up to 300 amps for short bursts (up to 5 sec.)”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“MAX CHARGE/DISCHARGE CURRENT- 135A”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“COLD CRANKING AMPS- (CCA) 1500A”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“MAX CHARGE VOLTAGE- 14.6 V”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“NOMINAL VOLTAGE- 12.8V FLOAT VOLTAGE- 13.5V SELF DISCHARGE RATE- < 4% / MONTH”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“LOW CUT OFF VOLTAGE- 10V (ANY CELL 2.5)”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“SELF DISCHARGE RATE- < 4% / MONTH”
Source: millertechenergy.com/product/12v-135ah-heated-battery
Battery care and safety
- Ingress protection
- IP65
- What the battery management system protects against
- protects against over-charging, over-discharging, excessive current, and unsafe temperatures
- Temperatures it may be charged in
- CHARGE TEMPERATURE RANGE- 25-131°F
“This means they are Marine approved IP65 rated”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“The BMS protects against over-charging, over-discharging, excessive current, and unsafe temperatures to extend battery life.”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“CHARGE TEMPERATURE RANGE- 25-131°F”
Source: millertechenergy.com/product/12v-135ah-heated-battery
Size and fit
- Overall dimensions
- 13” x 6.75” x 9”
- Terminals
- heavy-duty M8 bolts/washers in 18-8 stainless steel
- Connector on the battery
- M8
“Capacity 135AH Voltage 12.8V Weight 33 lbs Size 13” x 6.75” x 9””
Source: millertechenergy.com/product/12v-135ah-heated-battery
“Built with heavy-duty M8 bolts/washers in 18-8 stainless steel.”
Source: millertechenergy.com/product/12v-135ah-heated-battery
“Built with heavy-duty M8 bolts/washers in 18-8 stainless steel”
Source: millertechenergy.com/product/12v-135ah-heated-battery
Fitment across the range
- Connectivity
- Bluetooth
“Equipped with Bluetooth technology.”
Source: millertechenergy.com/product/12v-135ah-heated-battery
Other findings
- Bluetooth
- Bluetooth
“Equipped with Bluetooth technology”
Source: millertechenergy.com/product/12v-135ah-heated-battery
Sources
- 12V 135AH Heated Starting Battery W/ BT (12135-DPH) - MillertechArchived document
Source: millertechenergy.com/product/12v-135ah-heated-battery
Retrieved October 11, 2026