LFP (lithium iron phosphate) batteries generally last many more charge cycles, use more of their stored energy, and need no topping up compared with lead-acid batteries. Lead-acid costs less upfront but needs more care and usually needs replacing sooner.
Side by side
| LFP lithium | Lead-acid | |
|---|---|---|
| Cycle life | Long (Tenzor Prime: 6,000+ cycles) | Shorter, especially with deep discharge |
| Usable capacity | A large share of rated capacity | Kept shallower to protect life |
| Maintenance | None for the user | Flooded types need water topping |
| Weight and space | Lighter and more compact | Heavier and bulkier |
| Upfront cost | Higher | Lower |
Which is better for solar?
Solar batteries charge and discharge daily, which favours long cycle life. Over many years, LFP often works out better value despite the higher price. Lead-acid can suit tight budgets or existing battery banks.
Tenzor options
The Hypernova hybrid inverter works with both lead-acid and lithium-ion. Prime LFP batteries come in 25.6 V and 51.2 V versions, from 2.56 to 16.07 kWh, with a 5-year product warranty.
FAQs
Can I replace my lead-acid bank with LFP later?
Usually yes, if the inverter supports lithium and the voltage matches. A 25.6 V LFP battery replaces a 24 V bank, and 51.2 V replaces 48 V.
Is LFP safe?
LFP is known for thermal stability. Install it as the manual directs, with a proper battery management system.