4.8 Volt 5000mAh Sport NiMh Receiver / Flight Battery Pack
4 Cell Flat 5000mAh Receiver / Flight Battery Pack
Size: 95 x 23 x 44mm
Weight: 308g
Cell Type: NiMh Sub C
Max Charge Rate: 5 Amps
Discharge Rate: 50 Amps
These cells are focussed on High capacity and/or High-drain performance for Radio Control applications.
These receiver packs are assembled using:-
Pure nickel tabs
Capacitor discharge welding
Kapton, Nomex or TMK insulating tapes
Soft silicone 0.05 multi strand wire leads
Gold plated plug pins for perfect contact
Guidelines on handling NiMH cells & packs:
Charge the battery with quality charger, (Overlander RC-6S or RC-Pro8S and max. Current 1C)
If you plan to store the battery or leave idle for more than 2 weeks, charge it for 1/3 capacity, or say, 1A for 20 minutes AA cells, 3A for 20minutes subC cells), check the battery every 8 - 10 weeks, cycle if necessary.
Avoid storing the battery in hot & humid environment. Best temperature would be around 15~25ºC.
Always cycle a new battery before use, regardless of the manufacturer or the cells chemistry (i.e. NiCad, Nimh) If the battery has been stored a while before use, it will benefit from several cycles to regain its capacity and voltage strength.
Another logical reason behind this is that if any cells are faulty the problem will manifest itself on the first cycle, it is extremely rare for any cells to fail, and even more so after an initial cycle, and faults after the initial conditioning of a battery pack will usually be attributed to or most likely end user mistreatment.
This first cycle is very important, it should not be a fast charge, NiCad or Nimh should be at about 10% of its capacity for 12hours, it’s not critical, but should be as near as possible, DO NOT PEAK DETECT the first charge, as the electrolyte has not yet been through a cycle, and it will not “peak” correctly, this could lead to a mischarge (short charge) or the charger may run on, causing overcharging and possibly damaging the cells. Most modellers have a simple wall charger with outputs varying from 50mA to 200mA these are perfect for the initial charge of NiCad or Nimh packs. If you are unsure of how long to charge for, use this simple formula to get your charging time:- Pack Capacity + 20% divided by the output of the charger. i.e. battery capacity 1500 charger output 80mA
1500mAh + 20% = 1800 divided by 80mA output = 22.5hrs Okay it’s not charging at 10% of capacity, but it’s a nice long forming charge that will be good for the battery.
