Lithium Polymer Lipo Battery packs for model boats

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Lipo batteries are very different type of battery from earlyer types such as Nicads and NimH and require a different approach to charging
LI-po's cells have a nominal voltage of 3.7 volts so giving rise to packs with voltage ranges from
1 cell = 3.7 volts
2 cells in series = 7.4 volts
3 cells in series = 11.1 volts

The S1, S2, S3 and so on refers to the amount of cells in a given pack I.E S2 = 2 cels 7.4volts .
C Rating LiPo cells tend to be given a C or current rating. This is the maximum average recommended discharge current for the cell. I.E A pack that is rated 1900mAh and a 20C rating. would work out at 1.9 amps x 20 to give a maximum output of 38amps So the higher the C rating the higher the constant currant output

Charging
One thing that is really important with charging LiPo batteries is to use a charger designed specifically for LiPo batteries, and with most LiPo-specific chargers it's necessary to correctly select the cell count. Though most good chargers are able to do this automaticly now .Chargers Tend to constant current charge to 75% of the cell capacity until the pack voltage reaches 3.6 volts per cell. This charges the pack to about 80% of total capacity. The the charger will switch to a constant voltage charge rate of 3.6 volts per cell to top off the battery. To fully charge an empty pack normaly takes about one and a half hours. Also it is vital to have a ballancer on your charger if you us packs of more than 2cells this makes sure that the cells have the same charge in each cell

Safety Issues
If LiPo batteries are improperly charged they can in the right conditions explosive. It is imperative the importance of using a charger specifically designed to charge LiPo batteries, and to be positive that the manual cell count (if the charger has one) is correctly set for the specific battery being charged. If you use a good quality LiPo charger, these batteries are totally safe !!!.

LiPo Do's and Don'ts
Only use a charger that is specifically designed to charge LiPo batteries. Using other types of chargers can cause an extreme fire hazard!

LiPos don't develop memory like Ni-Cds. Just charge without cycling or discharging them.Store LiPos at least partially charged. LiPos will maintain their performance levels over time, even during non-use,.Don't Use any type of charger that is not specifically designed to charge LiPo batteries. Using non-LiPo-specific chargers can cause an extreme fire hazard!Don't Fully discharge your LiPo battery pack.
Most speed controller have a voltage cut off that will prevent over-discharging the battery. Discharging a LiPo beyond it's critical minimum voltage will cause damage and dramatically reduce your battery life .If you have a crash and the battery is damaged, don't put the battery in your car or house immediately after a crash.
It's possible that a chemical reaction can take place in the damaged battery that could cause a fire. Put the battery in a safe place for a least one hour.

7.4 volt

Overlander Sports Pack 2200mah 20c
Overlander Sports Pack 2200mah 20c
Ref: 361
The same Overlander quality, passion and after sales service at a great value price.
The sport range is recognised as offering consistent power and durability and has been used by enthusiasts new and old to
the hobby with exceptional result


Price:20.41 (Including VAT at 20%)


Quantity:  


POWER-TECH 3550MAH 33C 2S 7.4V ROUND HARDCASE LI-PO BATTERY
POWER-TECH 3550MAH 33C 2S 7.4V ROUND HARDCASE LI-PO BATTERY
Ref: 355
This 2 cell Li-Po is rated at 33C and has a capacity of 3350mAh. A female T connector is pre-soldered onto the low resistance silicone wires and a JST-XH 2 cell balance connector is fitted, which is compatible with most balance chargers.



This Li-Po is packed in a round hardcase, typically suited to older style radio control cars.


Price:30.00 (Including VAT at 20%)


Quantity:  


POWER-TECH 4450MAH 33C 2S 7.4V SQUARE HARDCASE LI-PO BATTERY
POWER-TECH 4450MAH 33C 2S 7.4V SQUARE HARDCASE LI-PO BATTERY
Ref: 163
This 2 cell Li-Po is rated at 33C and has a capacity of 4450mAh. A female T connector is pre-soldered onto the low resistance silicone wires and a JST-XH 2 cell balance connector is fitted, which is compatible with most balance chargers.



The Li-Po is packed in a square hardcase, typically suited to radio control cars.


Price:39.60 (Including VAT at 20%)


Quantity:  


POWER-TECH 5350MAH 33C 2S 7.4V SQUARE HARDCASE LI-PO BATTERY
POWER-TECH 5350MAH 33C 2S 7.4V SQUARE HARDCASE LI-PO BATTERY
Ref: 4615
This 2 cell Li-Po is rated at 33C and has a capacity of 5350mAh. A female T connector is pre-fitted onto the low resistance silicone wires and a JST-XH 2 cell balance connector is fitted, which is compatible with most balance chargers.



The Li-Po is packed in a square hardcase, typically suited to radio control cars.


Price:48.18 (Including VAT at 20%)


Quantity:  


11.1 Volt

POWER-TECH 3350MAH 33C 3S 11.1V LI-PO BATTERY
POWER-TECH 3350MAH 33C 3S 11.1V LI-PO BATTERY
Ref: 4948
This 3 cell Li-Po is rated at 33C and has a capacity of 3350mAh. A female T connector is pre-fitted onto the low resistance silicone wires and a JST-XH 3 cell balance connector is fitted, which is compatible with most balance chargers.


Price:40.00 (Including VAT at 20%)


Quantity:  


POWER-TECH 4450MAH 33C 3S 11.1V LI-PO BATTERY
POWER-TECH 4450MAH 33C 3S 11.1V LI-PO BATTERY
Ref: 358
This 3 cell Li-Po is rated at 33C and has a capacity of 4450mAh. A female T connector is pre-fitted onto the low resistance silicone wires and a JST-XH 3 cell balance connector is fitted, which is compatible with most balance chargers.


Price:49.91 (Including VAT at 20%)


Quantity:  


POWER-TECH 5550MAH 33C 3S 11.1V LI-PO BATTERY
POWER-TECH 5550MAH 33C 3S 11.1V LI-PO BATTERY
Ref: 165
This 3 cell Li-Po is rated at 33C and has a capacity of 5550mAh. A female T connector is pre-fitted onto the low resistance silicone wires and a JST-XH 3 cell balance connector is fitted, which is compatible with most balance chargers.


Price:60.98 (Including VAT at 20%)


Quantity:  


POWER-TECH 6050MAH 33C 3S 11.1V LI-PO BATTERY
POWER-TECH 6050MAH 33C 3S 11.1V LI-PO BATTERY
Ref: 4614
This 3 cell Li-Po is rated at 33C and has a capacity of 6050mAh. A female T connector is pre-fitted onto the low resistance silicone wires and a JST-XH 3 cell balance connector is fitted, which is compatible with most balance chargers.


Price:69.59 (Including VAT at 20%)


Quantity:  


LiPo Batteries 9000mAh 4S 14.8v 30C SupersportXL Ref: 9083  


Price:199.20 (Including VAT at 20%)

Quantity:  

Technical Specification

Length mm 227

Width mm 68

Depth mm 25.5

Weight (g) 848

Voltage 14.8

Cell Number 4

Battery Capacity 9000

Discharge Rate 30C Constant

Chemistry LiPo

Burst Discharge 50C (8 seconds)

Power Pack Cells and Voltage 4S - 14.8v

14.8 Volt

Extreme 3200mAh 4S 14.8v 60C EXTREME PRO
Extreme 3200mAh 4S 14.8v 60C EXTREME PRO
Ref: 164
Length mm143mm
Width mm46mm
Depth mm30mm
Voltage14.8
Cell Number4
Battery Capacity3200
Discharge Rate60C Constant
ChemistryLiPo
Burst Discharge80C (8seconds)
Lead & Balance plugSilicone leads,


Price:61.26 (Including VAT at 20%)


Quantity:  


SuperSport 4250mAh 4S 14.8v 30C
SuperSport 4250mAh 4S 14.8v 30C
Ref: 4953
SuperSport 4250 4S 14.8v 30C is part of our new SuperSport range. This new range offers the same reliability and quality of the Sport range, but with an improved discharge rate, giving you more power for your models!

All Overlander SuperSport 30C LiPo cells are manufactured using the "STACKING" method, unlike many of the cheaper Chinese imports which are manufactured using the "WINDING" construction, a much cheaper construction method, with very limited discharge rates (15C - 18C) but often quoted as higher. Stacking construction is known for its longevity, and gives stronger more reliable voltage.


• Overlander 30C SuperSport
• Lipo Battery Pack fitted with JST-XH balance plug
• Superb value without the loss of performance
• A real 30C product tested and proven
• 30C continuous charge, 50C bursts
• High quality silicone leads

Technical Specification

Length mm 136
Width mm 44
Depth mm 35
Weight 420
Voltage 22.2
Cell Number 6
Battery Capacity 4250
Discharge Rate 30C Constant
Burst Discharge 50C (8 seconds)
Watt Hours (Wh) 62.9


Price:55.00 (Including VAT at 20%)


Quantity:  


Overlander 5000mAh 4S 14.8v 25C Sport
Overlander 5000mAh 4S 14.8v 25C Sport
Ref: 359
Length mm137mm
Width mm44mm
Depth mm38mm
Voltage14.8
Cell Number4
Battery Capacity5000
Discharge Rate25C Constant
ChemistryLiPo
Burst Discharge50C (8 seconds)
Lead & Balance plugSilicone leads


Price:69.98 (Including VAT at 20%)


Quantity:  


Overlander 3900mAh 4S 14.8v 25C Sport
Overlander 3900mAh 4S 14.8v 25C Sport
Ref: 356
Length mm137mm
Width mm44mm
Depth mm28mm
Voltage14.8
Cell Number4
Battery Capacity3900
Discharge Rate25C Constant
ChemistryLiPo
Burst Discharge50C (8 seconds)
Lead & Balance plugSilicone leads


Price:56.16 (Including VAT at 20%)


Quantity:  


Smart Gaurd Digital lithium battery capacity checker
Smart Gaurd Digital lithium battery capacity checker
Ref: 362
Digital lithium battery capacity checker with advanced monitoring features

The battery capacity readings for NiCd & NiMh cells are ony an estimate and should not be relied upon.
N.B. The Smart Guard connects directly to JST-XH and J


Price:22.78 (Including VAT at 20%)


Quantity:  


 Lipo Safety Sack For use when charging lipo batteries - Overlander
Lipo Safety Sack For use when charging lipo batteries - Overlander
Ref: 162
It is well known that we need to be a little more careful with our battery handling and with LiPOs Overlander wants to help keep you safe with our LiPO Safety Sack. We have sacks for your battery storing and charging needs.
If you have made the jump


Price:16.96 (Including VAT at 20%)


Quantity:  


Tornado UBEC 4.8v or 6v switchable
Tornado UBEC 4.8v or 6v switchable
Ref: 363
The Tornado Ultimate BEC is an external circuit that taps power from your battery pack and regulates the voltage to the necessary 4.8 or 6 volts to power your receiver and servos. It does not replace the speed control.
However, it replaces the BEC f


Price:13.04 (Including VAT at 20%)


Quantity:  


Online Catalogue | Model Boat Accessories | Batteries |  Lithium Polymer Lipo Battery packs for model boats