CSPower/CSBattery HTL12-135
Last updated: 17 October 2026
Battery and charging
- Battery weight
- 41.1
- Voltage
- 12
- Chemistry
- GEL
- Internal resistance
- ≤4.5mΩ
- Capacity, at the 20-hour rate
- 135/20HR
- Capacity, at the 5-hour rate
- 107.5Ah
- Capacity, at the 10-hour rate
- 122Ah
- Maximum discharge current, as the maker labels it
- 810A(5s)
- Charging voltage
- 13.6 - 13.8V
- Float voltage
- 13.6 - 13.8V
- How fast it loses charge sitting idle
- 3%
“HTL12-135 12 135/20HR 344 172 280 285 41.1 T5/AP”
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
“HTL12-135 12 135/20HR 344 172 280 285 41.1 T5/AP”
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
Unconfirmed
“CSPower High-Temp Long life Deep cycle GEL Battery HTL12-135”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Unconfirmed
“Internal Resistance Full Charged Battery@ 25ºC ≤4.5mΩ”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
“HTL12-135 12 135/20HR 344 172 280 285 41.1 T5/AP”
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
Unconfirmed
“5 hour rate (66.8A, 5.25V) 107.5Ah”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Unconfirmed
“Capacity @ 25ºC 10 hour rate (37.8A, 5.4V) 122Ah”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Unconfirmed
“Max.Discharge Current @ 25ºC 810A(5s)”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
“Cycle Use Initial Charging Current Less than 30A Voltage 13.6 - 13.8V”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
“Charge (Constant Voltage) @ 25ºC Standby Use Initial Charging Current Less than 30A Voltage 13.6 - 13.8V”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Unconfirmed
“Self-Discharge@25ºCper Month 3%”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Battery care and safety
- Temperatures it may be charged in
- -25ºC~60ºC
- Temperatures it may be run in
- -25ºC~60ºC
- Temperatures it may be stored in
- -25ºC~60ºC
Unconfirmed
Row from the maker’s page: “Charge” | “-25ºC~60ºC”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Unconfirmed
“Ambient Temperature Discharge -25ºC~60ºC”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Unconfirmed
Row from the maker’s page: “Storage” | “-25ºC~60ºC”
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Size and fit
- Overall dimensions
- 344 172 280 285
- Terminals
- T5/AP
“HTL12-135 12 135/20HR 344 172 280 285 41.1 T5/AP”
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
“HTL12-135 12 135/20HR 344 172 280 285 41.1 T5/AP”
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
Identity
- Model code
- HTL12-135
“HTL12-135 12 135/20HR 344 172 280 285 41.1 T5/AP”
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
Sources
- AGM, Gel, Solar battery, Lead carbon battery, Lithium battery-CSPOWERArchived document
Source: cspbattery.com/htl-pro-6v250ah-high-temperature-deep-cycle-gel-battery-product
Retrieved October 18, 2026
- Cspower Deep Cycle Gel Battery 12V135ah for Washing Machine/Sweeper China Factory - Solar Battery and Power BatteryArchived document
Source: cspower.en.made-in-china.com/product/jCOQTbBKyrhS/China-Cspower-Deep-Cycle-Gel-Battery-12V135ah-for-Washing-Machine-Sweeper-China-Factory.html
Retrieved October 17, 2026