36V 14Ah Frog Type Battery Panasonic Cells - Under Seat Post Mount - Universal for DIY/FreeGo - UK Stock

SKU: 36V-14AH-FROG-UK
£191.00£200.00
In Stock
36VVoltage
14AhCapacity
Panasonic 3500mAhCell
25ABMS
  • High Performance: Compatible with 200W - 900W motors.
  • Premium Cells: Genuine Panasonic 18650-3500mAh cells for reliability.
  • Smart Protection: 25A Continuous discharge
  • Complete Kit: Includes 42V 2A Charger & cables
Stripe
1-Year WarrantyOfficial Support
Global StockFast Shipping
30 Days ReturnPeace of Mind
CECertified
UN38.3Tested
IEC62133
UKCAMarked

Product Description

The ultimate versatile solution for DIY e-bikes! Our 36V 14Ah "Frog" Battery mounts securely to your seat post, making it compatible with almost any bicycle geometry—even those without bottle cage mounts.


🏆 Universal Seat Post Mount

This battery comes with a clamp-on mounting base that attaches directly to your seat post (27.2mm - 31.6mm).
It's the perfect choice for:

  • DIY Conversions: Turning a standard mountain bike or folding bike into an e-bike.
  • Full Suspension Bikes: Where there is no space on the downtube.
  • Vintage Replacements: Fits older models from FreeGo (Hawk/Eagle), Cyclamatic, and Viking (Check dimensions).

⚡ Panasonic Power Upgrade

Old Frog batteries were heavy and weak (often Lead-Acid or cheap Lithium). We rebuilt this classic shape using modern Panasonic INR18650-3500mAh cells.
Result: 14Ah (504Wh) capacity in a lightweight pack (approx 3.5kg). That's enough for 35-50 miles of riding!


📏 Dimensions & Fitment

Size: 247mm x 147mm x 150mm

Includes the battery, the mounting controller box (base), and keys. The base clamps onto the seat tube under your saddle.


⚠️ Fitment Check: Before purchasing, please verify your frame dimensions. Use the size chart in the image gallery or contact us if you are unsure.

Technical Specifications

cell TypePanasonic INR18650-3500mAh
configuration10S 4P (10 Series, 4 Parallel)
nominal Voltage36V
nominal Capacity14Ah (504Wh)
bms Rating25A Continuous
output PowerSupports 200 to 900W Motors
charging Voltage42V
discharge Cutoff25V
connectorextra ables provided
battery Pack Size247mm x 147mm x 150mm
weightApprox. 5kg