Range of VapexTech Low Self Discharge AA Battery Packs
Specifications
Factory assembled from high quality Low Self Discharge AA size cells & fitted with a connector of your choice
Capacity: 2500mAh Measured at 500mA (0.2C) discharge.
Max Discharge Current: 6,000mA
Max Charge Current: 1200mA
Internal Resistance: <25mOhms per cell at 1000Hz battery fully charged
Item Description
- Choose capacity and battery configuration
- Choose between 6 connectors:
- Futaba
- JR/Hitec
- JST(BEC)
- mini-T (Micro RS4) (Polarity may be reversed. Please be sure to check this before plugging in your device!)
- Spektrum (JST-EHR)
- PP3 Lead
- Micro Molex*
- JST-SMP*
4.8V 2500mAh AA - Flat Dimensions (L x D x H): 57.6 x 14.8 x 52.1mm Weight: 118g | |
4.8V 2500mAh AA - Square Dimensions (L x D x H): 29.1 x 29.1 x 52.1mm Weight: 118g | |
6V 2500mAh AA - Flat Dimensions (L x D x H): 72.2 x 14.8 x 52.1mm Weight: 148g | |
6V 2500mAh AA - Hump Dimensions (L x D x H): 43.1 x 27.5 x 52.1mm Weight: 148g | |
9.6V 2500mAh AA - Flat Dimensions (L x D x H): 115.3 x 14.8 x 52mm Weight: 239g | |
9.6V 2500mAh AA - Flat Dimensions (L x D x H): 100.5 x 29.5 x 29.5mm Weight: 239g |
These batteries give around 3 times the capacity & hence running time, of most NiCd types, without any of the "memory effects." This means that you do not need to fully discharge the battery before recharging, so you can safely just top it up.
We also offer a custom build service, so please ask if you can't find the lead or pack you need advertised. Even if we don't have it in stock, we can usually build one for you - just contact us with your requirements & we will get back to you soon.
Remember if using a Mini-T connector on one of our packs be sure to check the polarity of the pack before use!
We are happy to offer help & advice if we can - just contact us.
Important Charging guide : (Read before use)
Questions about charging are the most common things we are asked, so here are a few answers...
With NiMH batteries you DO NOT need to fully discharge them before recharging. It is perfectly OK
to just top them up after slight use.
The faster a battery is charged, the more heat is produced, a battery getting warm during charging
is quite normal & will not cause damage, but if the battery gets too hot, this could lead to damage.
We recommend that as a general rule of thumb the charging current should be no more than half
the battery capacity i.e. for a 2500mAh battery, it should be charged at no more than 1200mA.
For larger batteries such as SubC sizes & above, the charge current can be up to the capacity, i.e. for a 3300mAh SubC cell it could be charged at up to 3300mA (But not the first 4 charges)
These are maximum ratings, it is
always best to go a little lower than this - it will improve the life expectancy of the battery. A goodfigure to go for is a quarter of the capacity (650mA for a 2600mAh battery) The first 3 or 4 chargesof any new battery pack should be carried out at a lower current, this gives the cells chanceto equalise, around 10 - 20% of the pack capacity is a good figure to aim at if possible.
The use of an automatic charger is best, as this prevents any accidental overcharging, this is
what can damage the battery, as once the battery has reached full charge, the energy supplied by
the charger is no longer being stored in the battery, but instead is being turned into heat & it is
this heating effect that will cause the damage.
What is "Low-Self-Discharge" technology?
There are a number of sellers who will have you believe that this is "new technology" & somehow better than all that has gone before. Well here are the facts.....
This technology has been around for about 2 years - we have been selling them for that long.
The term low self discharge means that the battery will not run down after being charged anything like as fast as a conventional NiMH or NiCd rechargeable battery would. After being charged, these batteries will typically retain 80% of that charge after 6 months, and 70% after 12 months, this makes them ideal for applications where they receive occasional light use, basically after being left for a couple of months you can just pick up where you left off.
Sounds good? Well as in all things that seem great there is always a catch - this is what the other guys selling this type of battery don't tell you - due to a combination of them not understanding the product & not wanting to lose a sale.
There are principally 3 down-sides:
1)The batteries have a lower capacity than standard NiMH types - typically about 20% lower. If your batteries get used very frequently, these are not the best choice, you will get better performance from the standard 2600mAh types such as the ones we sell.
2)The batteries cannot be fast charged in the same way that conventional NiMH types can. We recommend that these packs be charged at no more than 1,000mA
3)The packs cannot provide the same current output as standard types, so this makes them unsuitable for motor applications, or other high current uses (although as a transmitter pack they are fine)
Hope that this explanation helps, feel free to ask us any questions & we will get back to you as quickly as we can.
This power pack is ideal for all manner of radio control transmitters.
Remember we can supply this pack with other connectors, or even with multiple connectors, just let us know what you need.
Delivery Information
Returns
Terms of Sale
We will ship to ANYWHERE in the world - as long as the Royal Mail will let us! Buyers from Italy please note that we will only ship to Italy using the International Signed-For service, this is due to the very high levels of Italian buyers who claim that goods have not been received, if in any doubt, just ask for an accurate price. Where payment is by cheque we usually ship straight away - we won't make you wait for a week! If you buy from any of our other auctions as well, please contact us for a combined postage amount, this will usually save you money over the way Ebay will calculate it, due to the fact that Ebay cannot apply postage discounts where items have come from different listings.