P.MAXX 16v 850

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Utilized throughout the American Flat Track series on most of the hand held starters, this workhorse will get the job done.  With 850 cranking amps and over 12 hours of measured capacity (over 15v), this is the perfect battery for remote start applications like the Super Twins AFT class.

Weighing just over 6lbs and cased in our P.20 size shell (175x87x155mm).

Quick recharge times are another feature that makes your life easier at the track. This battery can easily handle a 20a charge from a compatible charger.

The P.MAXX batteries are built in our Virginia facility, with us knowing full well how important quality is to you, our friends and customers. We are here to answer your questions and offer our advice, so please contact us to discuss your battery needs.


All P.MAXX 16v batteries have the following features: 

*Advanced Case Design- Lighter and stronger than our previous case, it rejects heat, vibration, gas and oil.

*Advanced Cell Design- We designed the P.MAXX cells to cope with the demands of motorsports. Every component of our cells were designed and optimized for motorsports, based on a decade of experience building engine start batteries. These are only available from Full Spectrum Power.

* V Direct Multi Terminal - Our solid copper terminals have 8 threaded mount holes. Attach your accessory wires without having to use long screws on one small terminal.

* V Sleeve Silicon Terminal Covers - Color coded for polarity, our silicon terminal covers protect against short circuits.


If you choose to add a charger, it will be the OptiMate Lithium 9.5 amp charger for 13.2v and 16.4V batteries.


Additional Information

Model P.MAXX 16v 850
Weight 6lb / 2721g
Dimensions (metric) 175 x 87 x 155mm
Dimensions (standard) 6.9 x 3.4 x 6.1in

850ca / 12ah