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Early Roller-Furler Near-Disaster
- John sailed his first ocean passage on an early Hood roller furler and called it a nightmare that nearly caused a disaster.
- He now uses roller furlers for jibs for 38 years but warns they must be treated carefully.
Lithium Fragility Requires Reliable BMS
- Lithium cells are fragile: a single deep discharge or overcharge can permanently damage them.
- The BMS is the safety layer, so its design and reliability determine practical battery robustness.
Choose Batteries Based On Usage
- Decide your boat's usage profile before choosing lithium; match battery tech to real needs, not gadgets.
- If you won't use heavy loads or already have ample renewables, lithium may offer little real benefit.


