Charge controllers and inverter/chargers safely manage charging your battery bank. Many have an option to plug in a battery sensor to improve the charging.
The battery sensor attaches to the battery, sending back an accurate temperature reading. Lead acid batteries prefer having a different charging rate based on the temperature. Having the optional temperature sensor allows the charger to adjust its rate based on the actual battery temperature (temperature compensation). Note that most lithium batteries do not require temperature compensation for charging.
The temperature sensors are not standalone, they must be plugged into the appropriate charger.
Temperature sensors are used both for some charge controllers, and inverters with built-in AC chargers. Temperature sensors are essential when your battery bank is expected to experience significant temperature changes (e.g. differences of 20 degrees F over the year).Read more +
|Product Name ↑||Price|
|Xantrex Freedom Battery Temp Sensor 76-0022-00 Xantrex 76-0022-00 XANFR-TEMPSENS Xantrex Freedom Battery Temp Sensor 76-0022-00||$40.55|
|Xantrex Battery Temperature Sensor for RV, GS and Freedom Series Inverters Xantrex 809-0946 XANBTS-RVGS Xantrex Battery Temperature Sensor for RV, GS and Freedom Series Inverters||$25.35|
|Victron Energy Smart Battery Sense Long Range Victron Energy Smart Battery Sense 10m VICSMARTBTS10 Victron Energy Smart Battery Sense Long Range||$39.10|
|Truecharge 2 Temperature Sensor For Batteries Xantrex 808-0232-01 XANTRUCHRG2-BTS Truecharge 2 Temperature Sensor For Batteries||$38.86|
|Outback Rts Remote Temp Sensor W/20' Cable Outback RTS OUTRTS-BTS Outback Rts Remote Temp Sensor W/20' Cable 5.00 1||$59.85|
|Midnite Solar Battery Temperature Sensor- 15' Midnite Solar, Inc. MNBTS MIDMNBTS Midnite Solar Battery Temperature Sensor- 15'||$25.53|
|Blue Sky Battery Temperature Sensor (20') Blue Sky Energy 930-0022-20 BLSSB-BTS Blue Sky Battery Temperature Sensor (20') 4.5 2||$27.41|
If the battery temperature is low, then the full voltage point will be lower. However, the charge controller will unwittingly continue to try to raise the voltage level - causing your batteries to over charge, off-gas and eventually damage the batteries. If the battery temperature is relatively high, then the "full" voltage goes up. Without a temperature, the charge controller may think the battery bank is fully charged before it really is - leaving your batteries frequently undercharged.