The Pylontechs are in the Attic.
I have build an ad-hoc polystyrene box around them, but need a trickle heat source to keep them > 10degC.
At present I have two remote thermometer sensors within the box (1) at bottom (2nd) at top.
- The lower one dropped to 7 deg C yesterday overnight.
- The higher one is 2 - 4 deg C higher.
What experiences / recommendations ? Inkbird ? Generic heat mat ?
It would be good if I could control the wattage as well as set the ON-temp & OFF-temp . . .
Thx
Heating Mat for battery warming - thoughts / recommendations ?
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- Posts: 43
- Joined: Thu Feb 16, 2023 10:29 am
- Location: East Hampshire
Heating Mat for battery warming - thoughts / recommendations ?
4 kWp Solar PV : 50%/50% SE/SW : Solis Hybrid 3.6 : Pylontec 9.6 kWh
5 Kwh Air-to-Air Mitsubishi Heat Pump : single-split
Jotul 602 wood-burner ( 2012 )
Ripple : Graig Fatha & Kirk Hill . . . . plus various other renewable projects.
5 Kwh Air-to-Air Mitsubishi Heat Pump : single-split
Jotul 602 wood-burner ( 2012 )
Ripple : Graig Fatha & Kirk Hill . . . . plus various other renewable projects.
Re: Heating Mat for battery warming - thoughts / recommendations ?
I'd also be interested in this as well.
Current thinking is a brute force temporary method using a small tube heater in the nearby area - long-term is an insulated enclosure with something lower power.
Current thinking is a brute force temporary method using a small tube heater in the nearby area - long-term is an insulated enclosure with something lower power.
10x 405W JA Solar panels (4.05kWp) @ 5 degrees
3x 405W Longi panels (1.22kWp) @ 90 degrees
16.5kWh DIY LifePo4 battery
Solis inverter/charger
0.6kW Ripple WT
3x 405W Longi panels (1.22kWp) @ 90 degrees
16.5kWh DIY LifePo4 battery
Solis inverter/charger
0.6kW Ripple WT
Re: Heating Mat for battery warming - thoughts / recommendations ?
Trace heating tape is low wattage
What about a 15 watt light bulb?
What about a 15 watt light bulb?
Re: Heating Mat for battery warming - thoughts / recommendations ?
What do pylontech actually say in their specification regarding operating temperatures?
Re: Heating Mat for battery warming - thoughts / recommendations ?
First step is to confirm you actually have a problem! Pylontech throttle the charge rate from 10A/kWh to 2A/kWh when the cell temperature drops below 0℃. Be aware that this is the cell temp not the ambient temp, the cells take a long time to cool down when not in use and quickly warm up again when charged at the lower rate.
My Pylontechs are in the attic and last year it got down to -6℃ and I didn’t once notice the charge-rate be throttled due to temperature. I’ve had this in the past though, I can see them charge at 1.2kW for 20mins or so before cranking to full whack.
My Pylontechs are in the attic and last year it got down to -6℃ and I didn’t once notice the charge-rate be throttled due to temperature. I’ve had this in the past though, I can see them charge at 1.2kW for 20mins or so before cranking to full whack.
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger
(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger
(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
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- Posts: 43
- Joined: Thu Feb 16, 2023 10:29 am
- Location: East Hampshire
Re: Heating Mat for battery warming - thoughts / recommendations ?
Thanks AGT & Stinsy.
Plenty of time to observe and evaluate before panicking into overkill.
Pylontech manual gives limited info :-
- Charging window : Lower limit 0 C
- Discharge window : Lower Limit -10 C
Stinsy's description is rather more useful.
Plenty of time to observe and evaluate before panicking into overkill.
Pylontech manual gives limited info :-
- Charging window : Lower limit 0 C
- Discharge window : Lower Limit -10 C
Stinsy's description is rather more useful.
4 kWp Solar PV : 50%/50% SE/SW : Solis Hybrid 3.6 : Pylontec 9.6 kWh
5 Kwh Air-to-Air Mitsubishi Heat Pump : single-split
Jotul 602 wood-burner ( 2012 )
Ripple : Graig Fatha & Kirk Hill . . . . plus various other renewable projects.
5 Kwh Air-to-Air Mitsubishi Heat Pump : single-split
Jotul 602 wood-burner ( 2012 )
Ripple : Graig Fatha & Kirk Hill . . . . plus various other renewable projects.
-
- Posts: 43
- Joined: Thu Feb 16, 2023 10:29 am
- Location: East Hampshire
Re: Heating Mat for battery warming - thoughts / recommendations ?
I've just got hold of a 230V 13W heating pad to put under the bottom Pylontech ( 4 * 2000c in the stack ).
I was going to control the heating pad with a Temperature Sensor Relay ( a W1209 ).
However, with the batteries in the attic and Remote temp Sensors already in the insulated box I thought it would be better to experiment with manual control of the Heating Pad first.
I guess I need a WiFi controlled plug to switch the pad ON/OFF. . . . . to avoid climbing up/down to attic each time.
Is this as simple as it sounds ? My first WiFi plug . . . are they cheap / readily available / reliable / easy-to-use .
Is there anything a newbie user need watch out for ??
Linux on the PC
Android on the Phone.
Thanks.
I was going to control the heating pad with a Temperature Sensor Relay ( a W1209 ).
However, with the batteries in the attic and Remote temp Sensors already in the insulated box I thought it would be better to experiment with manual control of the Heating Pad first.
I guess I need a WiFi controlled plug to switch the pad ON/OFF. . . . . to avoid climbing up/down to attic each time.
Is this as simple as it sounds ? My first WiFi plug . . . are they cheap / readily available / reliable / easy-to-use .
Is there anything a newbie user need watch out for ??
Linux on the PC
Android on the Phone.
Thanks.
4 kWp Solar PV : 50%/50% SE/SW : Solis Hybrid 3.6 : Pylontec 9.6 kWh
5 Kwh Air-to-Air Mitsubishi Heat Pump : single-split
Jotul 602 wood-burner ( 2012 )
Ripple : Graig Fatha & Kirk Hill . . . . plus various other renewable projects.
5 Kwh Air-to-Air Mitsubishi Heat Pump : single-split
Jotul 602 wood-burner ( 2012 )
Ripple : Graig Fatha & Kirk Hill . . . . plus various other renewable projects.
Re: Heating Mat for battery warming - thoughts / recommendations ?
I use Tapo p110 Wi-Fi sockets, they have energy monitoring built in too, set schedules for on/off times, very easy to set up and control.