Powering a
Cleaner Future
Shenzhen Nengyi Electronic Technology 鈥?your trusted partner in energy storage solutions, from BMS to complete battery systems.
Development History
Foundation
Established the team under Shandong Tunan, entering the new energy industry and commencing R&D of energy storage products.
Launched the first-generation products, earning positive feedback from customers.
Growth
Established the Hangzhou R&D center for cutting-edge technology innovation. Founded Shenzhen Nengyi subsidiary, rapidly scaling technical capabilities and team size.
Successfully expanded into overseas markets. International market share surged rapidly, attracting significant industry attention.
Breakthrough
Launched the JKESS brand covering more than 30 countries worldwide. A 5-hectare large-scale modern energy storage production base was completed and put into operation.
Successfully developed high-voltage commercial & industrial energy storage systems with active balancing technology, helping customers improve returns by 2-5 years.
Expansion
From R&D design and production integration to backend testing and after-sales — JKESS now possesses full-chain capabilities in energy storage system development, manufacturing, and sales services.
Current production lines reach 2.1 GWh/year capacity, rising as a fast-growing star in the energy storage industry.
Certified Excellence
CE Certification
RoHS Compliance
ISO 9001:2025
UN38.3 Test Report
FCC Certification
UL Recognition
IEC 62133
CB Scheme
WEEE Directive
REACH Regulation
Made with JKESS
Real projects powered by JKESS energy storage solutions.
J******.
BMS Protection BoardExcellent BMS protection board — accurate voltage monitoring and easy to configure. Highly recommend for any DIY battery builder.
S******.
Battery KitThe battery kit exceeded my expectations. Easy installation with clear instructions. My off-grid system runs perfectly now!
M********.
BMS Protection BoardBeen using this BMS for 6 months in my solar setup. Rock solid performance, no issues at all. Great value for the price.
E******.
BMS Protection BoardOutstanding customer support! They helped me configure the BMS parameters remotely. The product itself is top quality.
D******.
Battery KitThe 6U rack battery kit is perfect for my server room backup. Clean installation, communication via CAN bus works flawlessly.
L******.
Battery KitBought the battery kit with caster wheels — very well built, sturdy enclosure. LCD display shows all the info I need at a glance.
R*******.
BMS Protection BoardUpgraded my RV system with this BMS. Cell balancing function works great, battery health has improved significantly.
J********.
Battery KitFast shipping and well-packaged. The 15KWh battery kit arrived in perfect condition. Setting it up was straightforward.
T*******.
BMS Protection BoardBest BMS I have used so far. The LCD screen is very informative, and the Bluetooth app makes monitoring easy.
A*******.
Battery KitUsing two 6U kits in parallel for our small business. 30KWh total, running smoothly for 3 months now. Very reliable.
D*******.
BMS Protection BoardThe active balancing feature on this BMS is a game-changer. My battery pack voltages stay perfectly matched.
R*******.
Battery KitExcellent product for the price. The sheet metal enclosure looks professional and the IP54 rating gives peace of mind.
C************.
BMS Protection BoardVery impressed with the build quality. Communication via RS485 worked right out of the box with my inverter.
M******.
Battery KitThe whole system from BMS to battery kit works seamlessly together. JKESS has really thought of everything.
A*******.
BMS Protection BoardSwitched from another BMS brand to JKESS — night and day difference. Better features, better support, better price.
K**********.
Battery KitOrdered the high voltage kit for our commercial project. Technical documentation was excellent and support responsive.
P********.
BMS Protection BoardThe BMS parameters are easy to customize via the software. Perfect for my custom 48V battery bank setup.
N*******.
Battery KitVery happy with my purchase. The battery kit with caster wheels is a brilliant design — easy to move for maintenance.
S*******.
BMS Protection BoardFive stars all the way. The BMS protection board arrived with clear documentation and setup was quick.
V********.
Battery KitAfter researching many options, JKESS was the best choice. Quality product, fast delivery, excellent communication.
J******.
BMS Protection BoardExcellent BMS protection board — accurate voltage monitoring and easy to configure. Highly recommend for any DIY battery builder.
S******.
Battery KitThe battery kit exceeded my expectations. Easy installation with clear instructions. My off-grid system runs perfectly now!
M********.
BMS Protection BoardBeen using this BMS for 6 months in my solar setup. Rock solid performance, no issues at all. Great value for the price.
E******.
BMS Protection BoardOutstanding customer support! They helped me configure the BMS parameters remotely. The product itself is top quality.
D******.
Battery KitThe 6U rack battery kit is perfect for my server room backup. Clean installation, communication via CAN bus works flawlessly.
L******.
Battery KitBought the battery kit with caster wheels — very well built, sturdy enclosure. LCD display shows all the info I need at a glance.
R*******.
BMS Protection BoardUpgraded my RV system with this BMS. Cell balancing function works great, battery health has improved significantly.
J********.
Battery KitFast shipping and well-packaged. The 15KWh battery kit arrived in perfect condition. Setting it up was straightforward.
T*******.
BMS Protection BoardBest BMS I have used so far. The LCD screen is very informative, and the Bluetooth app makes monitoring easy.
A*******.
Battery KitUsing two 6U kits in parallel for our small business. 30KWh total, running smoothly for 3 months now. Very reliable.
D*******.
BMS Protection BoardThe active balancing feature on this BMS is a game-changer. My battery pack voltages stay perfectly matched.
R*******.
Battery KitExcellent product for the price. The sheet metal enclosure looks professional and the IP54 rating gives peace of mind.
C************.
BMS Protection BoardVery impressed with the build quality. Communication via RS485 worked right out of the box with my inverter.
M******.
Battery KitThe whole system from BMS to battery kit works seamlessly together. JKESS has really thought of everything.
A*******.
BMS Protection BoardSwitched from another BMS brand to JKESS — night and day difference. Better features, better support, better price.
K**********.
Battery KitOrdered the high voltage kit for our commercial project. Technical documentation was excellent and support responsive.
P********.
BMS Protection BoardThe BMS parameters are easy to customize via the software. Perfect for my custom 48V battery bank setup.
N*******.
Battery KitVery happy with my purchase. The battery kit with caster wheels is a brilliant design — easy to move for maintenance.
S*******.
BMS Protection BoardFive stars all the way. The BMS protection board arrived with clear documentation and setup was quick.
V********.
Battery KitAfter researching many options, JKESS was the best choice. Quality product, fast delivery, excellent communication.
J******.
BMS Protection BoardExcellent BMS protection board — accurate voltage monitoring and easy to configure. Highly recommend for any DIY battery builder.
S******.
Battery KitThe battery kit exceeded my expectations. Easy installation with clear instructions. My off-grid system runs perfectly now!
M********.
BMS Protection BoardBeen using this BMS for 6 months in my solar setup. Rock solid performance, no issues at all. Great value for the price.
E******.
BMS Protection BoardOutstanding customer support! They helped me configure the BMS parameters remotely. The product itself is top quality.
D******.
Battery KitThe 6U rack battery kit is perfect for my server room backup. Clean installation, communication via CAN bus works flawlessly.
L******.
Battery KitBought the battery kit with caster wheels — very well built, sturdy enclosure. LCD display shows all the info I need at a glance.
R*******.
BMS Protection BoardUpgraded my RV system with this BMS. Cell balancing function works great, battery health has improved significantly.
J********.
Battery KitFast shipping and well-packaged. The 15KWh battery kit arrived in perfect condition. Setting it up was straightforward.
T*******.
BMS Protection BoardBest BMS I have used so far. The LCD screen is very informative, and the Bluetooth app makes monitoring easy.
A*******.
Battery KitUsing two 6U kits in parallel for our small business. 30KWh total, running smoothly for 3 months now. Very reliable.
D*******.
BMS Protection BoardThe active balancing feature on this BMS is a game-changer. My battery pack voltages stay perfectly matched.
R*******.
Battery KitExcellent product for the price. The sheet metal enclosure looks professional and the IP54 rating gives peace of mind.
C************.
BMS Protection BoardVery impressed with the build quality. Communication via RS485 worked right out of the box with my inverter.
M******.
Battery KitThe whole system from BMS to battery kit works seamlessly together. JKESS has really thought of everything.
A*******.
BMS Protection BoardSwitched from another BMS brand to JKESS — night and day difference. Better features, better support, better price.
K**********.
Battery KitOrdered the high voltage kit for our commercial project. Technical documentation was excellent and support responsive.
P********.
BMS Protection BoardThe BMS parameters are easy to customize via the software. Perfect for my custom 48V battery bank setup.
N*******.
Battery KitVery happy with my purchase. The battery kit with caster wheels is a brilliant design — easy to move for maintenance.
S*******.
BMS Protection BoardFive stars all the way. The BMS protection board arrived with clear documentation and setup was quick.
V********.
Battery KitAfter researching many options, JKESS was the best choice. Quality product, fast delivery, excellent communication.
J******.
BMS Protection BoardExcellent BMS protection board — accurate voltage monitoring and easy to configure. Highly recommend for any DIY battery builder.
S******.
Battery KitThe battery kit exceeded my expectations. Easy installation with clear instructions. My off-grid system runs perfectly now!
M********.
BMS Protection BoardBeen using this BMS for 6 months in my solar setup. Rock solid performance, no issues at all. Great value for the price.
E******.
BMS Protection BoardOutstanding customer support! They helped me configure the BMS parameters remotely. The product itself is top quality.
D******.
Battery KitThe 6U rack battery kit is perfect for my server room backup. Clean installation, communication via CAN bus works flawlessly.
L******.
Battery KitBought the battery kit with caster wheels — very well built, sturdy enclosure. LCD display shows all the info I need at a glance.
R*******.
BMS Protection BoardUpgraded my RV system with this BMS. Cell balancing function works great, battery health has improved significantly.
J********.
Battery KitFast shipping and well-packaged. The 15KWh battery kit arrived in perfect condition. Setting it up was straightforward.
T*******.
BMS Protection BoardBest BMS I have used so far. The LCD screen is very informative, and the Bluetooth app makes monitoring easy.
A*******.
Battery KitUsing two 6U kits in parallel for our small business. 30KWh total, running smoothly for 3 months now. Very reliable.
D*******.
BMS Protection BoardThe active balancing feature on this BMS is a game-changer. My battery pack voltages stay perfectly matched.
R*******.
Battery KitExcellent product for the price. The sheet metal enclosure looks professional and the IP54 rating gives peace of mind.
C************.
BMS Protection BoardVery impressed with the build quality. Communication via RS485 worked right out of the box with my inverter.
M******.
Battery KitThe whole system from BMS to battery kit works seamlessly together. JKESS has really thought of everything.
A*******.
BMS Protection BoardSwitched from another BMS brand to JKESS — night and day difference. Better features, better support, better price.
K**********.
Battery KitOrdered the high voltage kit for our commercial project. Technical documentation was excellent and support responsive.
P********.
BMS Protection BoardThe BMS parameters are easy to customize via the software. Perfect for my custom 48V battery bank setup.
N*******.
Battery KitVery happy with my purchase. The battery kit with caster wheels is a brilliant design — easy to move for maintenance.
S*******.
BMS Protection BoardFive stars all the way. The BMS protection board arrived with clear documentation and setup was quick.
V********.
Battery KitAfter researching many options, JKESS was the best choice. Quality product, fast delivery, excellent communication.
Brand
Matching
Wide compatibility across platforms and industries. No matter your ecosystem, JKESS integrates seamlessly.
Get in Touch
Ready to power your future? Contact us for a custom quote or partnership inquiry.
Phone
+86 131 6282 8868
WhatsAppLocation
Building B4, Yunzhi Science & Technology Park
Guangming Street, Guangming District
Shenzhen, China