Gel Cell Battery AGM Battery Flooded Battery
Absorption charging 14.2 to 14.4 V 14.6 to 14.8 V 14.4 to 14.8 V
Float charging 6.0 to 13.8 V 13.6 to 13.8 V 13.2 to 13.5 V
  Flooded Lead Acid Battery AGM Battery Gel Cell Battery Lithium Ion Battery
Depth of discharge 30–50% 80% 75% 80–100%
Charge efficiency 70–85% 95% 85–90% 85
Sensitive to overcharge Tolerant Yes Highly Yes
Position sensitive Yes No No No
Lifespan Up to 6 years 6 years 10 years Up to 5000 charge cycles, 3–10 years
Charging time 8 to 16 hours 5 hours 5 to 10 hours 2 to 3 hours