battery heater ?

[rob1234]

hi ,,can anyone tell me if its possible to fit a battery heater ,,mine didn't come with a heater ,,and someone said that lithium dont like being charged in the really cold weather ,thanks

 

[pwilmo]

My Predator Lithium does not have a heater so I fitted thermostat controlled wrap round heater pads , actually water tank heater pads .. Falcon from Amazon USA.

A complete waste of time !! my O my.
Not needed at all !!

Lithium have internal protection to prevent charging if the battery temperature is 5°C or less, there may be a slight differnce between manufacturers.

Once cut off is reached Lithium will only resume charging once battery temperature reaches 7°C.

So heating is only needed to charge your Lithium in very cold conditions; wild camping with solar or EHU.

So for my use .. in storage over winter, I leave the EHU on all the time to maintain the leisure Lithium on a Victron AC charger(has a 4 stage Lithium maintenance program), and the Lithium trickle tops up the vehicle/engine battery.

Call me a La La but I would never motorhome anywhere in such
brrrrr-cold conditions.

In UK if we are in the motorhome - in extreme cold weather, we'll whack on the heating and hot water 24/7(eco water for night time); the heat from the heating/hot water boiler is enough to keep the battery cosy .. and stop the safety valve dumping my water.

Obviously there'll be no danger charging a cold battery with solar at night, but on EHU use the AC electric power source to run the boiler.

Hope this helps.

 

[rob1234]

My Predator Lithium does not have a heater so I fitted thermostat controlled wrap round heater pads , actually water tank heater pads .. Falcon from Amazon USA.

A complete waste of time !! my O my.
Not needed at all !!

Lithium have internal protection to prevent charging if the battery temperature is 5°C or less, there may be a slight differnce between manufacturers.

Once cut off is reached Lithium will only resume charging once battery temperature reaches 7°C.

So heating is only needed to charge your Lithium in very cold conditions; wild camping with solar or EHU.

So for my use .. in storage over winter, I leave the EHU on all the time to maintain the leisure Lithium on a Victron AC charger(has a 4 stage Lithium maintenance program), and the Lithium trickle tops up the vehicle/engine battery.

Call me a La La but I would never motorhome anywhere in such
brrrrr-cold conditions.

In UK if we are in the motorhome - in extreme cold weather, we'll whack on the heating and hot water 24/7(eco water for night time); the heat from the heating/hot water boiler is enough to keep the battery cosy .. and stop the safety valve dumping my water. Hope this helps.

ahh ,,thanks ,,i thought i would damage the batt if i charged it during cold weather ,,so i will forget the heater stuff,,

 

[MisterB]

ahh ,,thanks ,,i thought i would damage the batt if i charged it during cold weather ,,so i will forget the heater stuff,,

we have home storage batteries, last January we had one morning where the battery (14.3kw) wouldnt discharge for about three hours until it warmed up. FYI it didnt suffer any damage and still works to its full capacity

 

[Raul]

ahh ,,thanks ,,i thought i would damage the batt if i charged it during cold weather ,,so i will forget the heater stuff,,

Yes it will damage it, the message above was hinting that no solar at night, therefore no charge. Your charging sources should be set not to charge bellow 5C deg. That is the protection for cold. When temperature rises above that, it will resume charging.

 

[Raul]

we have home storage batteries, last January we had one morning where the battery (14.3kw) wouldnt discharge for about three hours until it warmed up. FYI it didnt suffer any damage and still works to its full capacity

Have a look at your Seplos BMS with BMS studio. Enter password 000000 as log in to modify settings. Check low temp for discharging: it should be -20C.
Seplos V2 and early batch of V3 all had hit and miss stock settings. Every one of them I had to correct the low and high temp for charge and discharge.
Do you have the seplos usb- rg45 cable? That is used from
Battery to laptop. Fogstar sells them for £5.

 

[Two on Tour]

hi ,,can anyone tell me if its possible to fit a battery heater ,,mine didn't come with a heater ,,and someone said that lithium dont like being charged in the really cold weather ,thanks

My lithium hab battery is home built and I use a digital thermostat with the temperature probe located between the cells in the middle of the battery.
The digital thermostat switches on and off the heat mat at the setting I have entered.

 

[EzeeRider]

We have storage batteries in our loft and the advice from the battery supplier is to charge them in the early morning hours (the coldest part of the day) to put some heat into them. In the winter months I charge them daily between midnight and 0600hrs. A bit different to motorhome batteries in that they are in use all the time but there is a need to heat lithium to prevent them going into an alarm state. Presumably that happens when trying to charge when too cold. If you are not going to charge the battery in very cold weather I question if you need to heat a battery?
ezee

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[Pausim]

LiFePO4 batteries need heating to the cores of the cells before charging and this is difficult. It is particularly difficult to heat large prismatic cells properly. This is why many manufacturers do not do heated batteries. Heating pads outside the battery could warm the BMS temperature sensors and set off charging before the battery cell cores are ready.

 

[L' Hobo]

Excuse my ignorance but, how do you stop the alternator charging your lithium battery when driving on a freezing morning.
Is there a automatic shut off in my 460 Drift lithium battery to stop this?

 

[Two on Tour]

Excuse my ignorance but, how do you stop the alternator charging your lithium battery when driving on a freezing morning.
Is there a automatic shut off in my 460 Drift lithium battery to stop this?

I don't know about your Drift battery, but both the BMS on my battery and my Victon gear shut off any charging of my battery below 5c.

 

[Lumpy]

My Lifepo4 sits on a set of clothes warming pads (£12 from Amazon) plugged into a usb port, keeps my battery at a comfy 11deg. I do have to manually switch them on so I am trying to workout how to do that with a thermostat at the moment.

 

[L' Hobo]

I don't know about your Drift battery, but both the BMS on my battery and my Victon gear shut off any charging of my battery below 5c.

When this happens, does all the Alternator charge go to the Starter battery?

 

[Two on Tour]

When this happens, does all the Alternator charge go to the Starter battery?

It does in my case, as my B2B charger is stopped from operating until the battery temperature rises above 5c.
I would contact your battery manufacturer/supplier Owen to get clarification on the details of your particular batteries specifications.

 

[JockandRita]

I don't know about your Drift battery, but both the BMS on my battery and my Victon gear shut off any charging of my battery below 5c.

L' Hobo. Same set up for us (as above) Owen, especially as our Drift Eco batteries do not have built in heaters. Your Drift 460 probably does have them, however, the BMS will still prevent charging until the cells reach the required temperature.

For example, our batteries are registering 6 x degrees. One more degree down, and they'll stop taking a charge, as per the settings on our Victron gear, set up for me by Raul. The battery BMS may have a lower cut off figure, but now over ridden by the Victron settings, which can either be default, or customised.

It does in my case, as my B2B charger is stopped from operating until the battery temperature rises above 5c.

Ditto here Owen.

HTH,

Jock.

 

[L' Hobo]

It does in my case, as my B2B charger is stopped from operating until the battery temperature rises above 5c.
I would contact your battery manufacturer/supplier Owen to get clarification on the details of your particular batteries specifications.

I did ask when it was fitted by Offgrid Solutions in September that everything should be, because of my electrical ignorance, a fit and forget project so, because I trust them, hopefully that's what it is.
I had hoped to pop back and see Roger & Co before now but circumstances have got in the way.

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[pwilmo]

I think the settings on all gadgets Victron etc are a good safegaurd however I think you may have missed the point from my previous post ..
Yes, many modern lithium leisure batteries, particularly those using LiFePO4 chemistry, have a
built-in Battery Management System (BMS) with an internal cut-off to prevent charging when the internal temperature is below 0°C (32°F), or in some cases, 5°C (41°F)

 

[Raul]

Excuse my ignorance but, how do you stop the alternator charging your lithium battery when driving on a freezing morning.
Is there a automatic shut off in my 460 Drift lithium battery to stop this?

You set your B2B not to charge bellow 5C.