12-Cell (4s3p / 3s4p)

Datasheets & User Notes:

PH1111 Instructions

Calibration Notes


PH1111 Specification Summary
LENGTH: 16″/400mm
WIDTH: 8″/203mm
WEIGHT: 4.03kg/8.88lb
CONNECTOR Amphenol D-Sub
LED STATUS DISPLAY Green flashing: Charging
Green solid: Charge complete
Red flashing: Fuel gauge Calibration recommended
Blue Flashing: FG calibration in process
Blue Solid: FG Calibration complete
Red solid: Error
GLOBALLY COMPLIANT POWER SUPPLY 110-250VAC, 50-60Hz, UL listed, FCC & CE Compliant, RoHS Compliant
AC CABLE PH1111A: 110V N. American 3-pin connector
PH1111E: 220V European 2-pin connector with ground recess
PH1111U: 240V UK 3-pin connector
PH1111X: No connector


The PH1111 4-bay, simultaneous smart charger and calibrator is a standalone unit which charges any 4 “P-Series” Inspired Energy batteries at the same time, reducing cycle time for multi-battery applications. Additionally the PH1111 provides fuel gauge calibration independent of the device which uses the battery. The PH1111 is compatible with all the standard Li-Ion P-Series batteries regardless of shape, size, voltage, or capacity. Variants  are available for use in North America (PH1111A), Europe (PH1111E) or the UK (PH1111U).

PH1111 REACH, RoHS2, CE & Customs Declarations are available to download from our Shipping Page

Standard product approvals are listed above. Additional agency testing of these products can be arranged to meet specific testing needs. However, as the manufacture & design authority rests with Inspired Energy, all testing must be undertaken directly between us and the agency. Please contact us for details and pricing

Recharge Time

Different battery packs will require differing recharge times.Recharge times are for a full charge from 0% to 100% state of charge. This is valid for all variants and custom hybrids of each battery model (For example, the PH2054GN has the same recharge time as the PH2054HD).


Smart battery packs have a highly accurate on-board fuel gauge, but under certain operational conditions this fuel gauge may drift and begin to lost accuracy. The on-board battery electronics keep a log of this drift and the PH1111 reads this value from the smart battery when the the unit is inserted into one of the bays. If the battery is in need of fuel gauge calibration the charger LED will flash red, and the user can press the button on the front of the PH1111 to initiate the calibration cycle.

Calibration Times

Battery fuel gauge calibration can take a very long time & if interrupted, the process will need to start again. We recommend only pressing the calibrate button if the charger indicates that it is required (Flashing red LED) and if you have sufficient time for the process to complete.

Two factors contribute to the long calibration times:

– The battery must be discharged through a fixed resistor. Higher voltage batteries will discharge at a faster rate than lower voltage batteries (Ohm’s law). This is why the 28.8V batteries calibrate faster compared to the 14.4V batteries.

– The charge and discharge process includes periods of rest which enable the impedance tracking firmware within the battery to do its work.

Battery Model Recharge Times (hours) Recalibration Time (hours)
PB3037, PD3074 3.5 20-23
PD3077 4.5 25-28
PE4068 3.5 20-23
PH2054, PH3054 3.5 20-23
PH2059, PH3059 3.5 10-15

International Variants:

  • PH1111A: US/North America AC Plug
  • PH1111E: European 2-pin AC Plug
  • PH1111U: UK 3-Pin AC Plug
  • PH1111X: No AC Cable

What’s In The Box?

  • PH1111 Desktop Quick Charger/Calibrator Unit
  • Power Supply
  • AC Cable
  • Instruction Sheet

Ready to buy?

The PH1111 is designed and built in the USA by Inspired Energy, Inc.
Inspired Energy manufactures all products to order, and we sell direct to clients globally in quantities from 1 to 50,000+.
We accept credit cards for small orders & samples.
If you are interested in purchasing our products, or receiving a quotation please contact us at:
US Toll Free: 1-888-5-INSPIRE (1-888-546-7747) or USA 352-472-4855 or use the current email address shown on our contact us page.

Inspired Energy, LLC

25440 NW 8th Place, Newberry, FL 32669 USA

P: 352-472-4855

Toll Free: 888-546-7747

P-Series batteries use a high-current, 7-pin D-sub connector. They are more rugged than the N-Series batteries - some of them are IP65-rated - they also are optimized for using cells with low internal impedance which excel in low temperature and high discharge current applications. They require the use of a "PH" series charger.
N-Series batteries use a 5-blade standard battery connector. They are optimized for using high capacity cells for maximum runtime. They require the use of a "CH" series charger.