SawMaster
Well-Known Member
- Joined
- Apr 10, 2015
- Messages
- 9,450
- Reaction score
- 8,315
- Location
- SC
- Country
- United States
- Dash Cam
- Numerous and ever-changing
The oldest I've heard of still in daily use was 12 years. The numbers and specs my posts are about are 'worst case scenario' for the LiFePO4 and not below 50% for L/A which is 'in-spec' for those. Take the 'best case scenario' and the LiFePO4 will do even better in comparison. AGM can be useful and sometimes better, but we're not talking about those uses, only low-draw dashcams, so in our case only the faster charging is an asset.That is if you fully discharge it to empty and full charge it to full every day, if you have one with decent capacity so that you only discharge it to 50% then you can triple the number of charges and it will die of old age first, they are normally rated for around 15 years.
This whole subject can be fascinating, the vastly different chemistries involved, the various metals used, the separators, charge/discharge slopes and characteristics and more. Once you understand it in-depth you begin to see why manufacturers equip various devices with various technologies and why those are best (or cheaper) for their applications. At this time, LiFePO4 is one of the best but Lithium Titanate (LTO) may be taking it's place soon. Technology marches on
Phil