Lithium Battery Capacity Indicator – 1S–7S 18650 LiPo Li-ion Capacity Board & Charging Tester (3.7V–29.4V)

Know Your Battery Level. Every Cell Configuration. 1S Through 7S.

This lithium battery capacity indicator board gives you real-time battery level readout for 18650, LiPo, and Li-ion packs from 1S (3.7V) through 7S (29.4V). Essential for DIY battery builds, RC projects, and any application where knowing your remaining capacity matters.

Key Benefits

• 1S–7S Coverage — Supports battery packs from 3.7V (1S) to 29.4V (7S)
• Real-Time Capacity Display — LED or display readout shows remaining battery level at a glance
• 18650 / LiPo / Li-ion Compatible — Works with all common lithium cell types
• Compact Board Design — Easy to integrate into custom battery packs and enclosures
• 7 Configuration Options — Select the exact cell count for your battery pack

Whether you're building a custom e-bike battery, an RC pack, or a DIY power wall, this capacity indicator board gives you the real-time level readout you need to manage your battery safely and effectively.

Frequently Asked Questions

Q: What cell configurations are supported?
A: Available in 1S (4.2V), 2S (8.4V), 3S (12.6V), 4S (16.8V), 5S (21V), 6S (25.2V), and 7S (29.4V).

Q: What battery types does it work with?
A: Compatible with 18650, LiPo, and Li-ion battery packs.

Q: How does it display the battery level?
A: LED indicator display shows remaining capacity level in real time.

Q: Is it easy to install?
A: Yes — compact board design integrates easily into custom battery packs and enclosures.

Q: Is it suitable for e-bike batteries?
A: Yes — the 6S and 7S options are commonly used in e-bike battery management applications.

SPECIFICATIONS

• Configurations: 1S–7S (3.7V–29.4V)
• Compatible: 18650, LiPo, Li-ion
• Display: LED Capacity Indicator
• Weight: 0.02 lbs / 0.01 kg