Seelye Equipment Specialsist (Mfg of Flexcharge Produts| 1217 State St. | Charlevoix, Michigan| 49720 USA| Tel: 231-547-9430 sales@flexcharge.com Hours 9:00 am to 5:00 pm Eastern Time Weekdays
Xara
In Business
Since 1967
A division of Seelye Equipment Specialists

Get More From Your Solar Electric Energy System Using

Ultra High Efficiency FlexchargeControllers

Who We Are

SES Flexcharge

TM

USA is the trademarked name for all products manufactured by Seelye Equipment

Specialists (SES). SES was established in 1967. With many years of experience in the alternative energy

field we are very familiar with system sizing, design and applications that use our products.

Why Flexcharge Products

Working closely with dealers and their customers during the alternative energy system designs and

troubleshooting, it became clear that the alternative energy industry was severely lacking in controllers

that offered long term dependability combined with high operating efficiencies and at a reasonable

price.

Solid State controllers mounted on large heat sinks worked, but due to their inefficient operating

characteristics, they consume a significant amount of the charging energy generating heat at the

controller.

Before the patented Flexcharge process, relay based controllers were typically power hungry and

designed with unstable control circuits causing premature relay failure, serious over or under charging,

and over discharge situations.

Armed with this extensive real world PV system operational knowledge, the SES Flexcharge Engineering

Team created a new generation of controllers. The following criteria was used for the design of the

Flexcharge Product line.

•Ultra High Operating Efficiencies.

•Low Standby Operating Current.

•Exceptionally Accurate Voltage Regulation (Charge Controllers).

•Long Term Dependability.

•Durable (Waterproof Electronics).

•Easy to install and use.

•Intelligent Circuitry.

•Minimal User Adjustments.

•Accurate System Status Reporting.

•Install and Forget Operation.

•Competitive Pricing.

Flexcharge was issued a patent for the innovative circuitry that emerged from this effort and which

allows Flexcharge controllers to operate at these Ultra High Efficiencies.

The success of the Flexcharge product line and exceptionally low level of warranty returns is a testament

to the level which we have achieved these goals. Flexcharge controllers are operating in harsh

environments such as; Antarctica, Alaska, Africa, Saudi Arabia, FL, Canada, Mt. Everest etc. Flexcharge

offers a 5 year warranty on all model NC controllers and a full two years on most other models.

Our controllers are designed to be installed and forgotten. With boring monotony they will control & and

help protect your alternative energy system's battery banks, loads, and PV Array or permanent magnet

type charging source.

Service

During phenomenal growth we have not forgotten "where the food on our dinner plate is coming from".

You, the customer, are very important to us. We have highly qualified personnel available to answer your

alternative energy system application questions from 9 am to 5 pm EST USA. For off-hours requests, 24

hours a day, you may submit email, call our line to leave a message to have information mailed to you,

or to have someone call you back. Contact Us

To help answer your questions as they arise we've also put a substantial effort into the operating

manuals delivered with each controller. We tried to cover the topics that a novice installer will need to

connect and troubleshoot smaller PV systems. Larger Off-Grid systems are still best left to the

experienced installer.

Packaging

Something you will notice about the Flexcharge product line is the extensive use of non-corrosive ABS

polymer enclosures instead of the sometimes more eye appealing powder coated metal enclosures. This

engineering decision was made to eliminate case corrosion and allow for the simplified potting of the

electronics, Furthermore the Flexcharge controllers operate at such high operating efficiencies that

metal cases are not required to dissipate the heat that is generated by most controllers. This

combination creates a package which is forgiving to even the worst mounting locations such as; marine

vessel engine rooms, near a lead acid battery bank, non-environmentally controlled battery shacks,

marine navigational buoys, dust and sand environments, etc.

Flexcharge Product Design Philosophy

As an alternative energy systems distributor or dealer you want to offer your customers system

components which are the highest efficiency and quality, lowest cost and easiest to use. For this reason

SES Flexcharge USA approaches the controller design with the end users system performance as our

primary focus. As the consumer we understand that you want a high quality, efficient controller you can

install and forget about.

The first of each newly engineered Flexcharge product is put through rigorous real world, in the field

operational testing on a functioning solar or wind power generating system (you may be surprised how

many other brands are not field tested). It is then operated under, at, and over the controllers design

limits. The information gained through this testing is used for design improvements that are

incorporated before we sell the first controller. This rigorous testing ensures that the controller you

purchase will be the second generation design of the highest possible quality and reliability.

Due to the inherent high cost of generating power from an alternative energy system, each component

used in that system must operate at the highest possible efficiency. Secondly, because these systems

are often in remote locations these components must also perform at an exceptional level of

dependability. At Flexcharge we achieve this goal through strict attention to quality at every step, from

new product concept, to materials and components used, to controller testing. Flexcharge products are

machine assembled in the USA using the highest quality surface mount components. Each and every

controller is tested prior to shipping. Most Flexcharge controllers are potted with a UL listed flame

retarding material making them impervious to occasional water spray and high humidity conditions.

Charging Efficiency

Charging Efficiency Most other brands of controllers operate at efficiencies near 97% or worse. That

means that 3% or more of your solar panel's output capacity is used to produce heat in the charging

regulator. Flexcharge NC family of Controllers operate at efficiencies up to 99.9%. At full rated current

the NC25A operates at 99.5%, using only 0.5% of your precious PV energy. Most of our controllers use

less than 5 ma of standby current. Other brands will use up to 80 ma. The charging methods used to

achieve this ultra high efficiency as well as other features, were invented and patented by Flexcharge.

Flexcharge

TM

Charge Method

Charging Algorithm Explained All Flexcharge charge controllers use the innovative "Energy State Taper

Charge" method. In alternative energy charging systems this method has numerous advantages over

the constant voltage PWM charge regulation as used by many controller manufacturers. Click on the link

for more detail.

Controller Status Displays

Flexcharge controllers were designed to minimize the display complexity and power required to operate

them, while clearly displaying the controller's basic status. More elaborate displays should be installed

as a separate device in a easy to see location. We suggest using a switch to only have the display turned

on when you are interested in seeing it.

One question we are often asked is why we do not include volt or ampere meters, amp/hour meters,

totaling circuits, etc... in our controllers. The Reason: Usually these devices consume an undesirable

amount of precious system power and should be used only where they are really necessary, such as large

scale off grid home PV systems. For smaller dedicated PV systems like monitoring sites, navigational

buoys, PV powered street light controllers, etc. the system should be designed for unattended - non

monitored operation. The designer must ensure the project is supplied enough energy to operate, and

the PV system designer must ensure the solar powered or wind powered system makes and stores

enough energy to do the job. In smaller system installations the monitoring circuitry simply uses up

precious energy and adds cost. If you determine that you need system monitoring equipment, install it

where it will be most effective, and where it can be turned off when not in use.

Products

Where to buy

All products made in the USA
Seelye Equipment Specialsist (Mfg of Flexcharge Produts| 1217 State St. | Charlevoix, Michigan| 49720 USA| Tel: 231-547-9430 sales@flexcharge.com Hours 9:00 am to 5:00 pm Eastern Time
Xara
Since 1967
A division of Seelye Equipment Specialists

Get More From Your Solar Electric Energy System

Using

Ultra High Efficiency FlexchargeControllers

Who We Are

SES Flexcharge

TM

USA is the trademarked name for all

products manufactured by Seelye Equipment Specialists

(SES). SES was established in 1967. With many years of

experience in the alternative energy field we are very

familiar with system sizing, design and applications that

use our products.

Why Flexcharge Products

Working closely with dealers and their customers during

the alternative energy system designs and

troubleshooting, it became clear that the alternative

energy industry was severely lacking in controllers that

offered long term dependability combined with high

operating efficiencies and at a reasonable price.

Solid State controllers mounted on large heat sinks

worked, but due to their inefficient operating

characteristics, they consume a significant amount of

the charging energy generating heat at the controller.

Before the patented Flexcharge process, relay based

controllers were typically power hungry and designed

with unstable control circuits causing premature relay

failure, serious over or under charging, and over

discharge situations.

Armed with this extensive real world PV system

operational knowledge, the SES Flexcharge Engineering

Team created a new generation of controllers. The

following criteria was used for the design of the

Flexcharge Product line.

•Ultra High Operating Efficiencies.

•Low Standby Operating Current.

•Exceptionally Accurate Voltage Regulation (Charge

Controllers).

•Long Term Dependability.

•Durable (Waterproof Electronics).

•Easy to install and use.

•Intelligent Circuitry.

•Minimal User Adjustments.

•Accurate System Status Reporting.

•Install and Forget Operation.

•Competitive Pricing.

Flexcharge was issued a patent for the innovative

circuitry that emerged from this effort and which allows

Flexcharge controllers to operate at these Ultra High

Efficiencies.

The success of the Flexcharge product line and

exceptionally low level of warranty returns is a

testament to the level which we have achieved these

goals. Flexcharge controllers are operating in harsh

environments such as; Antarctica, Alaska, Africa, Saudi

Arabia, FL, Canada, Mt. Everest etc. Flexcharge offers a 5

year warranty on all model NC controllers and a full two

years on most other models.

Our controllers are designed to be installed and

forgotten. With boring monotony they will control & and

help protect your alternative energy system's battery

banks, loads, and PV Array or permanent magnet type

charging source.

Service

During phenomenal growth we have not forgotten

"where the food on our dinner plate is coming from".

You, the customer, are very important to us. We have

highly qualified personnel available to answer your

alternative energy system application questions from 9

am to 5 pm EST USA. For off-hours requests, 24 hours a

day, you may submit email, call our line to leave a

message to have information mailed to you, or to have

someone call you back. Contact Us

To help answer your questions as they arise we've also

put a substantial effort into the operating manuals

delivered with each controller. We tried to cover the

topics that a novice installer will need to connect and

troubleshoot smaller PV systems. Larger Off-Grid

systems are still best left to the experienced installer.

Packaging

Something you will notice about the Flexcharge product

line is the extensive use of non-corrosive ABS polymer

enclosures instead of the sometimes more eye appealing

powder coated metal enclosures. This engineering

decision was made to eliminate case corrosion and allow

for the simplified potting of the electronics,

Furthermore the Flexcharge controllers operate at such

high operating efficiencies that metal cases are not

required to dissipate the heat that is generated by most

controllers. This combination creates a package which is

forgiving to even the worst mounting locations such as;

marine vessel engine rooms, near a lead acid battery

bank, non-environmentally controlled battery shacks,

marine navigational buoys, dust and sand

environments, etc.

Flexcharge Product Design Philosophy

As an alternative energy systems distributor or dealer

you want to offer your customers system components

which are the highest efficiency and quality, lowest cost

and easiest to use. For this reason SES Flexcharge USA

approaches the controller design with the end users

system performance as our primary focus. As the

consumer we understand that you want a high quality,

efficient controller you can install and forget about.

The first of each newly engineered Flexcharge product is

put through rigorous real world, in the field operational

testing on a functioning solar or wind power generating

system (you may be surprised how many other brands

are not field tested). It is then operated under, at, and

over the controllers design limits. The information

gained through this testing is used for design

improvements that are incorporated before we sell the

first controller. This rigorous testing ensures that the

controller you purchase will be the second generation

design of the highest possible quality and reliability.

Due to the inherent high cost of generating power from

an alternative energy system, each component used in

that system must operate at the highest possible

efficiency. Secondly, because these systems are often in

remote locations these components must also perform

at an exceptional level of dependability. At Flexcharge

we achieve this goal through strict attention to quality

at every step, from new product concept, to materials

and components used, to controller testing. Flexcharge

products are machine assembled in the USA using the

highest quality surface mount components. Each and

every controller is tested prior to shipping. Most

Flexcharge controllers are potted with a UL listed flame

retarding material making them impervious to

occasional water spray and high humidity conditions.

Charging Efficiency

Charging Efficiency Most other brands of controllers

operate at efficiencies near 97% or worse. That means

that 3% or more of your solar panel's output capacity is

used to produce heat in the charging regulator.

Flexcharge NC family of Controllers operate at

efficiencies up to 99.9%. At full rated current the NC25A

operates at 99.5%, using only 0.5% of your precious PV

energy. Most of our controllers use less than 5 ma of

standby current. Other brands will use up to 80 ma. The

charging methods used to achieve this ultra high

efficiency as well as other features, were invented and

patented by Flexcharge.

Flexcharge

TM

Charge Method

Charging Algorithm Explained All Flexcharge charge

controllers use the innovative "Energy State Taper

Charge" method. In alternative energy charging systems

this method has numerous advantages over the

constant voltage PWM charge regulation as used by

many controller manufacturers. Click on the link for

more detail.

Controller Status Displays

Flexcharge controllers were designed to minimize the

display complexity and power required to operate them,

while clearly displaying the controller's basic status.

More elaborate displays should be installed as a

separate device in a easy to see location. We suggest

using a switch to only have the display turned on when

you are interested in seeing it.

One question we are often asked is why we do not

include volt or ampere meters, amp/hour meters,

totaling circuits, etc... in our controllers. The Reason:

Usually these devices consume an undesirable amount

of precious system power and should be used only

where they are really necessary, such as large scale off

grid home PV systems. For smaller dedicated PV

systems like monitoring sites, navigational buoys, PV

powered street light controllers, etc. the system should

be designed for unattended - non monitored operation.

The designer must ensure the project is supplied enough

energy to operate, and the PV system designer must

ensure the solar powered or wind powered system

makes and stores enough energy to do the job. In

smaller system installations the monitoring circuitry

simply uses up precious energy and adds cost. If you

determine that you need system monitoring equipment,

install it where it will be most effective, and where it can

be turned off when not in use.

Products

Where to buy