This graph shows the 300 mAh discharge characteristics of a 2900 mAh gel cell. This battery, from an Elecraft K2, weighs 34 ounces and costs $28. A typical rating of 300-400 charge/recharge cycles and inexpensive chargers means a cost per charge price of roughly $00.15.
|This battery was only discharged down to 11.4V – anything less than that risks damage to one or more of the cells.A gel cell’s weight & bulk make it impractical for backpacking or any other type of “lightweight hiking” endeavor. But for Field Day or emergency stand-by power, this type of battery is probably te best choice given its length of service life and flat discharge curve.|