GP4-12 valve regulated lead acid 12v 4ah battery is widely used even when surge current is not important and other designs could provide higher energy densities.
The grid structure of the lead acid battery is made from a lead alloy. Pure lead is too soft and would not support itself, so small quantities of other metals are added to get the mechanical strength and improve electrical properties. The most common additives are antimony, calcium, tin and selenium.
12v 4ah Battery Benefits
- Inexpensive and simple to manufacture.
- Mature, reliable and well-understood technology – when used correctly, lead-acid is durable and provides dependable service.
- The self-discharge is among the lowest of rechargeable battery systems.
- Capable of high discharge rates.
- Sealed Maintenance-free
- ABS Containers (UL94HB or UL94V0)
- High-quality AGM separator
Battery Applications
- UPS & EPS
- Lighting equipment
- Fire alarms and security systems
- Communications and electric equipment
- Portable VTR/TV, tape recorders, radios, etc.
- Various power toys and recreational equipment
- Emergency power supplies in power generation plants and substations
- Golf Cart
TECHNICAL SPECIFICATIONS
| Nominal Voltage | 12V | ||
| Nominal Capacity (20 hour rate) | 4.0Ah | ||
| Capacity
25℃(77°F) |
10 hour rate (0.38A) | 3.8Ah | |
| 5 hour rate (0.71A) | 3.55Ah | ||
| 1 hour rate (2.64A) | 2.64Ah | ||
| Internal Resistance | Full Charged Battery 25℃ | ≤34mΩ | |
| Capacity affected by Temperature
(10 hour ) |
40℃ (104°F) | 102% | |
| 25℃ (77°F) | 100% | ||
| 0℃ (32°F) | 85% | ||
| -15℃ (5°F) | 65% | ||
| Self-Discharge
25℃(77°F) Capacity |
after 3 month storage | 90% | |
| after 6 month storage | 80% | ||
| after 12 month storage | 62% | ||
| Charge (Constant Voltage) 25℃(77°F) | Float | Initial Charging Current Less than 1.2A
Voltage 13..6-13.8V |
|
| Cycle | Initial Charging Current Less than 1.2A
Voltage 14.4-15.0V |
||
DIMENSIONS & WEIGHT
| Battery Dimensions | Length | 90mm |
| Width | 70mm | |
| Height | 101mm | |
| Total Height | 107mm | |
| Box Dimensions | Length | 389mm |
| Width | 200mm | |
| Height | 147mm | |
| Quantity Per Box | 10 pcs per box | |
| Net weight Per Cell | 1.31 kg±50g | |
| Net weight Per Box | 13.1kg | |
| Gross Weight | 13.5kg | |
Discharge Constant Current per Cell (Amperes at 77°F25°C)
| F.V/Time | 5min | 10min | 15min | 30min | 45min | 1h | 2h | 3h | 5h | 8h | 10h | 20h |
| 16.50 | 13.20 | 8.80 | 6.62 | 4.40 | 3.08 | 2.64 | 1.65 | 1.13 | 0.75 | 0.51 | 0.42 | 0.22 |
| 16.20 | 12.96 | 8.64 | 6.50 | 4.32 | 3.02 | 2.59 | 1.62 | 1.11 | 0.74 | 0.50 | 0.41 | 0.22 |
| 15.90 | 12.72 | 8.48 | 6.38 | 4.24 | 2.97 | 2.54 | 1.59 | 1.09 | 0.73 | 0.49 | 0.40 | 0.21 |
| 15.60 | 12.48 | 8.32 | 6.26 | 4.16 | 2.91 | 2.50 | 1.56 | 1.07 | 0.71 | 0.48 | 0.40 | 0.21 |
| 15.00 | 12.00 | 8.00 | 6.02 | 4.00 | 2.80 | 2.40 | 1.50 | 1.03 | 0.69 | 0.46 | 0.38 | 0.20 |
Discharge Constant Power per Cell (Watts at 77°F 25°C)
| F.V/Time | 5min | 10min | 15min | 30min | 45min | 1h | 2h | 3h | 5h | 8h | 10h | 20h |
| 1.60V | 25.41 | 16.94 | 12.75 | 8.47 | 5.93 | 5.08 | 3.18 | 2.18 | 1.45 | 0.98 | 0.81 | 0.42 |
| 1.65V | 24.95 | 16.63 | 12.51 | 8.32 | 5.82 | 4.99 | 3.12 | 2.14 | 1.42 | 0.96 | 0.79 | 0.42 |
| 1.70V | 24.49 | 16.32 | 12.28 | 8.16 | 5.71 | 4.90 | 3.06 | 2.10 | 1.40 | 0.94 | 0.78 | 0.41 |
| 1.75V | 24.02 | 16.02 | 12.05 | 8.01 | 5.61 | 4.80 | 3.00 | 2.06 | 1.37 | 0.92 | 0.76 | 0.40 |
| 1.80V | 23.10 | 15.40 | 11.59 | 7.70 | 5.39 | 4.62 | 2.89 | 1.98 | 1.32 | 0.89 | 0.73 | 0.39 |
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