Adrianli Hypersonic September 18, 2018 Share September 18, 2018 Hmm, you don't normally jump start a battery, .. you jump start the engine. Actually also have jump start the battery. Either u connect to higher voltage to shock it or u connect both terminals to shock it. This is for lead acid battery only. Never never try it on lithium batteries. You will have a shock of your life. ↡ Advertisement 2 Link to post Share on other sites More sharing options...
jumpwarrior September 19, 2018 Author Share September 19, 2018 If we are now in a 4 seasons country, it would be a clear cut YES for me (for using LiFePO4 which is housed in a car boot). Here in Singapore, if one is to park the car in an unsheltered carpark, temperature within the boot and cabin can reach 50 deg C or more too. @jumpwarrior, I would like to point out another thing for your consideration. From risk management point of view, battery management system, active cooling system are NOT entirely fool proof to prevent temperature from hitting the critical level (just like most if not all modern mobile phone and charger have auto cutoff feature to prevent over-charging the battery, yet there are still reported case of phone fire). In a nutshell, it does help to reduce the risk, but NOT eliminating it totally. Last, LiFePO4 is NOT immune to thermal runaway... From my experience, when the battery is weak, upon starting the car (using push start button), the cabin light and speedometer panel will become much dimer till the engine starts. This is best biggest tell tale sign... @carbon82 Would like to ask what's the average temperature for LiFePO4's thermal runaway to start happening? Would also like to trouble you to also share with us what's the average thermal runaway temperature for lead-acid batteries, for comparison. Also, from the slide it states that "we have provided several reasonable well-documented examples of serious thermal runaway...", able to share what are the examples so that we can all learn from it? Link to post Share on other sites More sharing options...
inlinesix Supersonic September 19, 2018 Share September 19, 2018 @jumpwarrior If you are interested to install LIFEPO4, look for Codewerx https://web.facebook.com/Codewerx/videos/vb.777530702328456/541559156302335/?type=3&theater I don't know the price. Link to post Share on other sites More sharing options...
jumpwarrior September 21, 2018 Author Share September 21, 2018 @jumpwarrior If you are interested to install LIFEPO4, look for Codewerx https://web.facebook.com/Codewerx/videos/vb.777530702328456/541559156302335/?type=3&theater I don't know the price. This looks interesting! Will give them a call for more details. Thanks for the intro 1 Link to post Share on other sites More sharing options...
Adrainsmith December 6, 2018 Share December 6, 2018 Today, lithium-ion is the fastest growing and most promising battery chemistry. 1 1 Link to post Share on other sites More sharing options...
carloverguy2017 5th Gear December 6, 2018 Share December 6, 2018 Hi. I am using LiFe for my r/c applications but only in low discharge applications. The running of my r/c models are still using LiPo batteries with high discharge rates, 60C. For high discharge rates, i dont think LiFe is suitable. So i think that is why it is not used in real cars. They are unable to hold its voltage under high loads. My LiFe batteries used in transmitter and receiver applications. I was about to reply to TS about this LiFe batteries.. LOL We been playing RC so many years, LiFe is old standards already. Nothing to shout about. So let's move on. What research ? It's already done by our RC gurus. It's old game. Link to post Share on other sites More sharing options...
Adrainsmith February 15, 2019 Share February 15, 2019 Its high specific energy makes Li-cobalt the popular choice for mobile phones, laptops and digital cameras. The battery consists of a cobalt oxide cathode and a graphite carbon anode. The cathode has a layered structure and during discharge, lithium ions move from the anode to the cathode. Link to post Share on other sites More sharing options...
Sdf4786k Twincharged July 19, 2019 Share July 19, 2019 anyone knows if the car is left for a week or so, would you return from a trip with flat batt? Link to post Share on other sites More sharing options...
Tiger1 6th Gear July 20, 2019 Share July 20, 2019 anyone knows if the car is left for a week or so, would you return from a trip with flat batt?Mine OK so far. Been out for 2 trips of 8 days each this past 5 weeks and car okok. BTW, I did not unplug my car cam. It auto cut at a preset voltage. Link to post Share on other sites More sharing options...
Ishiwgao 3rd Gear July 20, 2019 Share July 20, 2019 anyone knows if the car is left for a week or so, would you return from a trip with flat batt? One week usually no problem. more than that then need to depend on what electronics you are using. Link to post Share on other sites More sharing options...
Theoldjaffa Hypersonic January 19, 2023 Share January 19, 2023 @jumpwarrior did u buy the LiFePo4 car battery in the end? how has it been so far? Link to post Share on other sites More sharing options...
daffodilistic 1st Gear May 2, 2023 Share May 2, 2023 (edited) LiFePO4 actually is better suited for EVs/hybrids than regular petrol cars, based on my understanding. I am planning to switch to a LiFePO4 battery for my Prius, but once I can confirm the car temperature in the battery bay doesn't get hot too much (max 45 deg C?) via the use of my temperature logging sensor, I think it's safe to swap out my normal lead acid battery to a LiFePO4 one. Edited May 2, 2023 by daffodilistic ↡ Advertisement Link to post Share on other sites More sharing options...
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